Questõesde UECE 2014

1
1
Foram encontradas 462 questões
68562a10-b9
UECE 2014 - Física - Oscilação e Ondas, Acústica

Dentre as fontes de energia eletromagnéticas mais comumente observadas no dia a dia estão o Sol, os celulares e as antenas de emissoras de rádio e TV. A característica comum a todas essas fontes de energia é

A
o meio de propagação, somente no vácuo, e a forma de propagação, através de ondas.
B
o meio de propagação e a forma de propagação, por condução.
C
a velocidade de propagação e a forma de propagação, por convecção.
D
a velocidade de propagação e a forma de propagação, através de ondas.
684f6047-b9
UECE 2014 - Física - Circuitos Elétricos e Leis de Kirchhoff, Eletricidade

A energia elétrica é disponibilizada em nossas residências na forma de tensão alternada. Isso significa que entre os dois conectores de uma tomada há uma diferença de potencial elétrico que varia com o tempo conforme uma função do tipo U = (2202) ∙ sen(2π ∙ 60 ∙ t), onde U é a diferença de potencial e t é o tempo. A constante (2202) é válida para Estados em que o fornecimento de energia elétrica monofásica é de 220 V nominal, como na maioria das residências do Ceará. É correto afirmar que essa diferença de potencial tem um valor máximo e uma frequência, respectivamente, de

A
2202 Volts e 60 Hz.
B
2202 Volts e 60 kHz.
C
220 Volts e 60 Hz.
D
220 Volts e 60 kHz.
68425920-b9
UECE 2014 - Física - Lentes, Ótica

Um raio de luz se propaga pelo ar e incide em uma lente convergente, paralelamente ao eixo principal, saindo pela face oposta da lente. Sobre o raio de luz após sair da lente, cuja espessura não é desprezível, é correto afirmar que

A
sofreu duas refrações.
B
sofreu uma refração seguida por uma difração.
C
sofreu duas difrações.
D
sofreu uma difração seguida por uma refração.
6845446e-b9
UECE 2014 - Física - Física Térmica - Termologia, 1ª Lei da Termodinâmica

Em um motor de carro o processo de combustão gera 300 J de energia térmica. Deste valor, 200 J são perdidos sob a forma de calor. Qual a eficiência desse motor?

A
300/3.
B
100/3.
C
200/3.
D
500/2.
68486a69-b9
UECE 2014 - Física - 2ª Lei da Termodinâmica - Ciclo de Carnot e Máquinas Térmicas, Física Térmica - Termologia

O biodiesel é um combustível biodegradável que pode ser produzido a partir de gorduras animais ou óleos vegetais. Esse combustível substitui total ou parcialmente o óleo diesel de petróleo em motores ciclo diesel automotivos. Considere que a queima de 1,0 g de biodiesel libera x Joules de energia e o rendimento do motor é de 15%. Qual o trabalho mecânico realizado pelo motor, em Joules, resultante da queima de 10 g desse combustível?

A
1,5x/100.
B
150x/10.
C
15x/100.
D
15x/10.
684bc35d-b9
UECE 2014 - Física - Grandezas e Unidades, Conteúdos Básicos

A aceleração da gravidade próximo à superfície da Terra é, no Sistema Internacional de Unidades, aproximadamente 10 m/s² . Caso esse sistema passasse a usar como padrão de comprimento um valor dez vezes menor que o atual, esse valor da aceleração da gravidade seria numericamente igual a

A
10.
B
1.
C
100.
D
0,1.
68339849-b9
UECE 2014 - Física - Estática e Hidrostática, Hidrostática

Considere um tanque cilíndrico vertical. A tampa plana inferior desse recipiente é substituída por uma calota esférica de mesmo raio interno que o cilindro. Suponha que o tanque esteja completamente cheio de água. Nessas circunstâncias, é correto afirmar que a pressão hidrostática produz forças na superfície interna da calota sempre

A
radiais e para dentro.
B
verticais e para baixo.
C
radiais e para fora.
D
verticais e para cima.
683062c7-b9
UECE 2014 - Física - Física Térmica - Termologia, 1ª Lei da Termodinâmica

O poder calorífico da gasolina é 34,86 kJ/L. Isso equivale a dizer que 1 L desse combustível tem armazenados 34,86 kJ de energia no caso de sua utilização em uma combustão perfeita. Suponha que 1 L de gasolina pudesse ser utilizado com 100% de eficiência para produção de calor. Isso seria suficiente para manter por 3486 s um aquecedor de que potência, em W?

A
1.
B
10.
C
100.
D
1000.
682c0957-b9
UECE 2014 - Física - Dinâmica, Leis de Newton

Duas massas iguais são presas entre si por uma mola ideal que obedece à lei de Hooke. Considere duas situações: (i) a mola é comprimida a 50% de seu tamanho original; e (ii) a mola é distendida de 50% de seu comprimento original. O termo tamanho original se refere à mola sem compressão nem distensão. Sobre a energia elástica armazenada na mola nas situações (i) e (ii), é correto afirmar que

A
é a mesma nos dois casos.
B
é maior no caso (i).
C
é maior no caso (ii).
D
é nula em um dos casos.
682785a4-b9
UECE 2014 - Física - Resistores e Potência Elétrica, Eletricidade

Um resistor ôhmico de 10 Ω é ligado a uma bateria de 10 V durante 10 s. Caso 100% da energia dissipada pelo resistor pudesse ser convertida em trabalho para o deslocamento de uma massa, esse valor seria, em Joules,

A
10.
B
1.
C
100.
D
1000.
68368227-b9
UECE 2014 - Física - Ótica, Espelhos Planos

Dois raios de luz coplanares incidem sobre um espelho plano. O primeiro raio incide normalmente no espelho e o segundo, tem um ângulo de incidência 30°. Considere que o espelho é girado de modo que o segundo raio passe a ter incidência normal. Nessa nova configuração o primeiro raio passa a ter ângulo de incidência igual a

A
15°.
B
60°.
C
30°.
D
90°.
683955af-b9
UECE 2014 - Física - Estática e Hidrostática, Campo e Força Magnética, Estática - Momento da Força/Equilíbrio e Alavancas, Magnetismo

Uma gangorra em um parquinho infantil é ocupada por dois gêmeos idênticos e de mesma massa, Cosmo e Damião. Na brincadeira, enquanto um dos irmãos sobe num dos acentos do brinquedo, o outro desce no outro acento. O brinquedo pode ser descrito como uma haste rígida, com um acento em cada extremidade, e livre para girar em um plano vertical em torno do ponto central. Considere os torques na haste da gangorra exercidos pelas forças peso de Cosmo (tc) e de Damião (td), em relação ao ponto central. Na configuração em que Cosmo está na posição mais alta, é correto afirmar que

A
|tc | < |td |. 
B
|tc | = |td |.
C
|tc | > |td |. 
D
|tc | > −|td |.
683eb799-b9
UECE 2014 - Física - Gravitação Universal, Força Gravitacional e Satélites

Os planetas orbitam em torno do Sol pela ação de forças. Sobre a força gravitacional que determina a órbita da Terra, é correto afirmar que depende

A
das massas de todos os corpos do sistema solar.
B
somente das massas da Terra e do Sol.
C
somente da massa do Sol.
D
das massas de todos os corpos do sistema solar, exceto da própria massa da Terra.
68243dba-b9
UECE 2014 - Física - Vetores, Conteúdos Básicos

Duas forças atuam sobre um disco de massa m, que inicialmente repousa com uma face sobre uma mesa horizontal e pode deslizar sem atrito. Considere que as forças sejam paralelas ao plano da mesa, tenham módulos iguais e direções diferentes, e que sejam aplicadas no centro do disco. Nessas circunstâncias, é correto afirmar que o vetor aceleração do disco

A
tem módulo diferente de zero.
B
tem módulo igual a zero.
C
tem direção perpendicular ao plano do disco e sentido para cima.
D
tem direção perpendicular ao plano do disco e sentido para baixo.
6820cb1c-b9
UECE 2014 - Física - Calorimetria, Física Térmica - Termologia

O uso de fontes alternativas de energia tem sido bastante difundido. Em 2012, o Brasil deu um importante passo ao aprovar legislação específica para micro e mini geração de energia elétrica a partir da energia solar. Nessa modalidade de geração, a energia obtida a partir de painéis solares fotovoltaicos vem da conversão da energia de fótons em energia elétrica, sendo esses fótons primariamente oriundos da luz solar. Assim, é correto afirmar que essa energia é transportada do Sol à Terra por

A
convecção.
B
condução.
C
indução.
D
irradiação.
681dbdef-b9
UECE 2014 - Física - Calorimetria, Física Térmica - Termologia

Considere uma garrafa de refrigerante posta verticalmente sobre uma mesa horizontal. Com a garrafa ainda fechada, sua parte superior, entre a superfície do líquido e a tampa, é preenchida por um gás pressurizado. Considere que o refrigerante está inicialmente a 10 °C, e passados 10 minutos esteja a 21 °C. Sobre o gás entre a superfície do líquido e a tampa, é correto afirmar que, ao final dos 10 minutos,

A
tem sua energia térmica aumentada e sua pressão reduzida.
B
tem sua energia térmica e pressão aumentadas.
C
tem sua energia térmica e sua pressão reduzidas.
D
tem sua energia térmica reduzida e sua pressão aumentada.
16a10b04-b8
UECE 2014 - Inglês - Análise sintática | Syntax Parsing

“As technology evolves, publishers are adding bells and whistles that encourage detours” is an example of

TEXT

    Clifford the Big Red Dog looks fabulous on an iPad. He sounds good, too — tap the screen and hear him pant as a blue truck roars into the frame. “Go, truck, go!” cheers the narrator. But does this count as story time? Or is it just screen time for babies? It is a question that parents, pediatricians and researchers are struggling to answer as children’s books, just like all the other ones, migrate to digital media.

   

     For years, child development experts have advised parents to read to their children early and often, citing studies showing its linguistic, verbal and social benefits. In June, the American Academy of Pediatrics advised doctors to remind parents at every visit that they should read to their children from birth, prescribing books as enthusiastically as vaccines and vegetables.

   

     On the other hand, the academy strongly recommends no screen time for children under 2, and less than two hours a day for older children. 

   

     At a time when reading increasingly means swiping pages on a device, and app stores are bursting with reading programs and learning games aimed at infants and preschoolers, which bit of guidance should parents heed? 

   

     The answer, researchers say, is not yet entirely clear. “We know how children learn to read,” said Kyle Snow, the applied research director at the National Association for the Education of Young Children. “But we don’t know how that process will be affected by digital technology.” 

   

     Part of the problem is the newness of the devices. Tablets and e-readers have not been in widespread use long enough for the sorts of extended studies that will reveal their effects on learning.

   

     Dr. Pamela High, the pediatrician who wrote the June policy for the pediatrics group, said electronic books were intentionally not addressed. “We tried to do a strongly evidence-based policy statement on the issue of reading starting at a very young age,” she said. “And there isn’t any data, really, on e-books.”

   

    But a handful of new studies suggest that reading to a child from an electronic device undercuts the dynamic that drives language development. “There’s a lot of interaction when you’re reading a book with your child,” Dr. High said. “You’re turning pages, pointing at pictures, talking about the story. Those things are lost somewhat when you’re using an e-book.”

   

     In a 2013 study, researchers found that children ages 3 to 5 whose parents read to them from an electronic book had lower reading comprehension than children whose parents used traditional books. Part of the reason, they said, was that parents and children using an electronic device spent more time focusing on the device itself than on the story (a conclusion shared by at least two other studies).

 

     “Parents were literally putting their hands over the kids’ hands and saying, ‘Wait, don’t press the button yet. Finish this up first,’ ” said Dr. Julia Parish-Morris, a developmental psychologist at Children’s Hospital of Philadelphia and the lead author of the 2013 study that was conducted at Temple University. Parents who used conventional books were more likely to engage in what education researchers call “dialogic reading,” the sort of back-and-forth discussion of the story and its relation to the child’s life that research has shown are key to a child’s linguistic development.

   

     Complicating matters is that fewer and fewer children’s e-books can strictly be described as books, say researchers. As technology evolves, publishers are adding bells and whistles that encourage detours. “What we’re really after in reading to our children is behavior that sparks a conversation,” said Kathy Hirsh-Pasek, a professor of psychology at Temple and co-author of the 2013 study. “But if that book has things that disrupt the conversation, like a game plopped right in the middle of the story, then it’s not offering you the same advantages as an old-fashioned book.”

   

     Of course, e-book publishers and app developers point to interactivity as an educational advantage, not a distraction. Many of those bells and whistles — Clifford’s bark, the sleepy narration of “Goodnight Moon,” the appearance of the word “ham” when a child taps the ham in the Green Eggs and Ham app — help the child pick up language, they say.

   

     There is some evidence to bear out those claims, at least in relation to other technologies. A study by the University of Wisconsin in 2013 found that 2-year-olds learned words faster with an interactive app as opposed to one that required no action.

   

     But when it comes to learning language, researchers say, no piece of technology can substitute for a live instructor — even if the child appears to be paying close attention.

 

     Patricia K. Kuhl, a director of the Institute for Learning and Brain Sciences at the University of Washington, led a study in 2003 that compared a group of 9-month-old babies who were addressed in Mandarin by a live instructor with a group addressed in Mandarin by an instructor on a DVD. Children in a third group were exposed only to English.

 

    “The way the kids were staring at the screen, it seemed obvious they would learn better from the DVDs,” she said. But brain scans and language testing revealed that the DVD group “learned absolutely nothing,” Dr. Kuhl said. “Their brain measures looked just like the control group that had just been exposed to English. 

   

     The only group that learned was the live social interaction group.” In other words, “it’s being talked with, not being talked at,” that teaches children language, Dr. Hirsh-Pasek said. 

   

     Similarly, perhaps the biggest threat posed by e-books that read themselves to children, or engage them with games, is that they could lull parents into abdicating their educational responsibilities, said Mr. Snow of the National Association for the Education of Young Children. 

 

    “There’s the possibility for e-books to become the TV babysitters of this generation,” he said. “We don’t want parents to say, ‘There’s no reason for me to sit here and turn pages and tell my child how to read the word, because my iPad can do it.’ ” 

   

     But parents may find it difficult to avoid resorting to tablets. Even literacy advocates say the guidelines can be hard to follow, and that allowing limited screen time is not high on the list of parental missteps. “You might have an infant and think you’re down with the A.A.P. guidelines, and you don’t want your baby in front of a screen, but then you have a grandparent on Skype,” Mr. Snow said. “Should you really be tearing yourself apart? Maybe it’s not the world’s worst thing.” 

   

     “The issue is when you’re in the other room and Skyping with the baby cause he likes it,” he said. Even if screen time is here to stay as a part of American childhood, good old-fashioned books seem unlikely to disappear anytime soon. Parents note that there is an emotional component to paper-andink storybooks that, so far, does not seem to extend to their electronic counterparts, however engaging. 

From: www.nytimes.com, OCT. 11, 2014 

A
complex sentence.
B
simple sentence.
C
compound sentence.
D
compound-complex.
169d1215-b8
UECE 2014 - Inglês - Tempos Verbais | Verb Tenses, Adjetivos | Adjectives, Substantivos: definição e tipos | Nouns: definition and types

The word READING in the sentences “At a time when reading increasingly means swiping pages on a device (...), But a handful of new studies suggest that reading to a child from an electronic device (...), and (...) whose parents read to them from an electronic book had lower reading comprehension (...)” functions, respectively, as

TEXT

    Clifford the Big Red Dog looks fabulous on an iPad. He sounds good, too — tap the screen and hear him pant as a blue truck roars into the frame. “Go, truck, go!” cheers the narrator. But does this count as story time? Or is it just screen time for babies? It is a question that parents, pediatricians and researchers are struggling to answer as children’s books, just like all the other ones, migrate to digital media.

   

     For years, child development experts have advised parents to read to their children early and often, citing studies showing its linguistic, verbal and social benefits. In June, the American Academy of Pediatrics advised doctors to remind parents at every visit that they should read to their children from birth, prescribing books as enthusiastically as vaccines and vegetables.

   

     On the other hand, the academy strongly recommends no screen time for children under 2, and less than two hours a day for older children. 

   

     At a time when reading increasingly means swiping pages on a device, and app stores are bursting with reading programs and learning games aimed at infants and preschoolers, which bit of guidance should parents heed? 

   

     The answer, researchers say, is not yet entirely clear. “We know how children learn to read,” said Kyle Snow, the applied research director at the National Association for the Education of Young Children. “But we don’t know how that process will be affected by digital technology.” 

   

     Part of the problem is the newness of the devices. Tablets and e-readers have not been in widespread use long enough for the sorts of extended studies that will reveal their effects on learning.

   

     Dr. Pamela High, the pediatrician who wrote the June policy for the pediatrics group, said electronic books were intentionally not addressed. “We tried to do a strongly evidence-based policy statement on the issue of reading starting at a very young age,” she said. “And there isn’t any data, really, on e-books.”

   

    But a handful of new studies suggest that reading to a child from an electronic device undercuts the dynamic that drives language development. “There’s a lot of interaction when you’re reading a book with your child,” Dr. High said. “You’re turning pages, pointing at pictures, talking about the story. Those things are lost somewhat when you’re using an e-book.”

   

     In a 2013 study, researchers found that children ages 3 to 5 whose parents read to them from an electronic book had lower reading comprehension than children whose parents used traditional books. Part of the reason, they said, was that parents and children using an electronic device spent more time focusing on the device itself than on the story (a conclusion shared by at least two other studies).

 

     “Parents were literally putting their hands over the kids’ hands and saying, ‘Wait, don’t press the button yet. Finish this up first,’ ” said Dr. Julia Parish-Morris, a developmental psychologist at Children’s Hospital of Philadelphia and the lead author of the 2013 study that was conducted at Temple University. Parents who used conventional books were more likely to engage in what education researchers call “dialogic reading,” the sort of back-and-forth discussion of the story and its relation to the child’s life that research has shown are key to a child’s linguistic development.

   

     Complicating matters is that fewer and fewer children’s e-books can strictly be described as books, say researchers. As technology evolves, publishers are adding bells and whistles that encourage detours. “What we’re really after in reading to our children is behavior that sparks a conversation,” said Kathy Hirsh-Pasek, a professor of psychology at Temple and co-author of the 2013 study. “But if that book has things that disrupt the conversation, like a game plopped right in the middle of the story, then it’s not offering you the same advantages as an old-fashioned book.”

   

     Of course, e-book publishers and app developers point to interactivity as an educational advantage, not a distraction. Many of those bells and whistles — Clifford’s bark, the sleepy narration of “Goodnight Moon,” the appearance of the word “ham” when a child taps the ham in the Green Eggs and Ham app — help the child pick up language, they say.

   

     There is some evidence to bear out those claims, at least in relation to other technologies. A study by the University of Wisconsin in 2013 found that 2-year-olds learned words faster with an interactive app as opposed to one that required no action.

   

     But when it comes to learning language, researchers say, no piece of technology can substitute for a live instructor — even if the child appears to be paying close attention.

 

     Patricia K. Kuhl, a director of the Institute for Learning and Brain Sciences at the University of Washington, led a study in 2003 that compared a group of 9-month-old babies who were addressed in Mandarin by a live instructor with a group addressed in Mandarin by an instructor on a DVD. Children in a third group were exposed only to English.

 

    “The way the kids were staring at the screen, it seemed obvious they would learn better from the DVDs,” she said. But brain scans and language testing revealed that the DVD group “learned absolutely nothing,” Dr. Kuhl said. “Their brain measures looked just like the control group that had just been exposed to English. 

   

     The only group that learned was the live social interaction group.” In other words, “it’s being talked with, not being talked at,” that teaches children language, Dr. Hirsh-Pasek said. 

   

     Similarly, perhaps the biggest threat posed by e-books that read themselves to children, or engage them with games, is that they could lull parents into abdicating their educational responsibilities, said Mr. Snow of the National Association for the Education of Young Children. 

 

    “There’s the possibility for e-books to become the TV babysitters of this generation,” he said. “We don’t want parents to say, ‘There’s no reason for me to sit here and turn pages and tell my child how to read the word, because my iPad can do it.’ ” 

   

     But parents may find it difficult to avoid resorting to tablets. Even literacy advocates say the guidelines can be hard to follow, and that allowing limited screen time is not high on the list of parental missteps. “You might have an infant and think you’re down with the A.A.P. guidelines, and you don’t want your baby in front of a screen, but then you have a grandparent on Skype,” Mr. Snow said. “Should you really be tearing yourself apart? Maybe it’s not the world’s worst thing.” 

   

     “The issue is when you’re in the other room and Skyping with the baby cause he likes it,” he said. Even if screen time is here to stay as a part of American childhood, good old-fashioned books seem unlikely to disappear anytime soon. Parents note that there is an emotional component to paper-andink storybooks that, so far, does not seem to extend to their electronic counterparts, however engaging. 

From: www.nytimes.com, OCT. 11, 2014 

A
noun, noun, adjective.
B
noun, noun, noun.
C
noun, verb, adjective.
D
verb, noun, noun.
16997da8-b8
UECE 2014 - Inglês - Voz Ativa e Passiva | Passive and Active Voice

The clause “(...) when you're using an e-book” in the passive form is

TEXT

    Clifford the Big Red Dog looks fabulous on an iPad. He sounds good, too — tap the screen and hear him pant as a blue truck roars into the frame. “Go, truck, go!” cheers the narrator. But does this count as story time? Or is it just screen time for babies? It is a question that parents, pediatricians and researchers are struggling to answer as children’s books, just like all the other ones, migrate to digital media.

   

     For years, child development experts have advised parents to read to their children early and often, citing studies showing its linguistic, verbal and social benefits. In June, the American Academy of Pediatrics advised doctors to remind parents at every visit that they should read to their children from birth, prescribing books as enthusiastically as vaccines and vegetables.

   

     On the other hand, the academy strongly recommends no screen time for children under 2, and less than two hours a day for older children. 

   

     At a time when reading increasingly means swiping pages on a device, and app stores are bursting with reading programs and learning games aimed at infants and preschoolers, which bit of guidance should parents heed? 

   

     The answer, researchers say, is not yet entirely clear. “We know how children learn to read,” said Kyle Snow, the applied research director at the National Association for the Education of Young Children. “But we don’t know how that process will be affected by digital technology.” 

   

     Part of the problem is the newness of the devices. Tablets and e-readers have not been in widespread use long enough for the sorts of extended studies that will reveal their effects on learning.

   

     Dr. Pamela High, the pediatrician who wrote the June policy for the pediatrics group, said electronic books were intentionally not addressed. “We tried to do a strongly evidence-based policy statement on the issue of reading starting at a very young age,” she said. “And there isn’t any data, really, on e-books.”

   

    But a handful of new studies suggest that reading to a child from an electronic device undercuts the dynamic that drives language development. “There’s a lot of interaction when you’re reading a book with your child,” Dr. High said. “You’re turning pages, pointing at pictures, talking about the story. Those things are lost somewhat when you’re using an e-book.”

   

     In a 2013 study, researchers found that children ages 3 to 5 whose parents read to them from an electronic book had lower reading comprehension than children whose parents used traditional books. Part of the reason, they said, was that parents and children using an electronic device spent more time focusing on the device itself than on the story (a conclusion shared by at least two other studies).

 

     “Parents were literally putting their hands over the kids’ hands and saying, ‘Wait, don’t press the button yet. Finish this up first,’ ” said Dr. Julia Parish-Morris, a developmental psychologist at Children’s Hospital of Philadelphia and the lead author of the 2013 study that was conducted at Temple University. Parents who used conventional books were more likely to engage in what education researchers call “dialogic reading,” the sort of back-and-forth discussion of the story and its relation to the child’s life that research has shown are key to a child’s linguistic development.

   

     Complicating matters is that fewer and fewer children’s e-books can strictly be described as books, say researchers. As technology evolves, publishers are adding bells and whistles that encourage detours. “What we’re really after in reading to our children is behavior that sparks a conversation,” said Kathy Hirsh-Pasek, a professor of psychology at Temple and co-author of the 2013 study. “But if that book has things that disrupt the conversation, like a game plopped right in the middle of the story, then it’s not offering you the same advantages as an old-fashioned book.”

   

     Of course, e-book publishers and app developers point to interactivity as an educational advantage, not a distraction. Many of those bells and whistles — Clifford’s bark, the sleepy narration of “Goodnight Moon,” the appearance of the word “ham” when a child taps the ham in the Green Eggs and Ham app — help the child pick up language, they say.

   

     There is some evidence to bear out those claims, at least in relation to other technologies. A study by the University of Wisconsin in 2013 found that 2-year-olds learned words faster with an interactive app as opposed to one that required no action.

   

     But when it comes to learning language, researchers say, no piece of technology can substitute for a live instructor — even if the child appears to be paying close attention.

 

     Patricia K. Kuhl, a director of the Institute for Learning and Brain Sciences at the University of Washington, led a study in 2003 that compared a group of 9-month-old babies who were addressed in Mandarin by a live instructor with a group addressed in Mandarin by an instructor on a DVD. Children in a third group were exposed only to English.

 

    “The way the kids were staring at the screen, it seemed obvious they would learn better from the DVDs,” she said. But brain scans and language testing revealed that the DVD group “learned absolutely nothing,” Dr. Kuhl said. “Their brain measures looked just like the control group that had just been exposed to English. 

   

     The only group that learned was the live social interaction group.” In other words, “it’s being talked with, not being talked at,” that teaches children language, Dr. Hirsh-Pasek said. 

   

     Similarly, perhaps the biggest threat posed by e-books that read themselves to children, or engage them with games, is that they could lull parents into abdicating their educational responsibilities, said Mr. Snow of the National Association for the Education of Young Children. 

 

    “There’s the possibility for e-books to become the TV babysitters of this generation,” he said. “We don’t want parents to say, ‘There’s no reason for me to sit here and turn pages and tell my child how to read the word, because my iPad can do it.’ ” 

   

     But parents may find it difficult to avoid resorting to tablets. Even literacy advocates say the guidelines can be hard to follow, and that allowing limited screen time is not high on the list of parental missteps. “You might have an infant and think you’re down with the A.A.P. guidelines, and you don’t want your baby in front of a screen, but then you have a grandparent on Skype,” Mr. Snow said. “Should you really be tearing yourself apart? Maybe it’s not the world’s worst thing.” 

   

     “The issue is when you’re in the other room and Skyping with the baby cause he likes it,” he said. Even if screen time is here to stay as a part of American childhood, good old-fashioned books seem unlikely to disappear anytime soon. Parents note that there is an emotional component to paper-andink storybooks that, so far, does not seem to extend to their electronic counterparts, however engaging. 

From: www.nytimes.com, OCT. 11, 2014 

A
when an e-book has to be used (by you)
B
when an e-book must be used (by you).
C
when an e-book is been used (by you).
D
when an e-book is being used (by you).
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UECE 2014 - Inglês - Tempos Verbais | Verb Tenses, Passado progressivo | Past continuous

In the sentence “Parents were literally putting their hands over the kids' hands and saying (...)” the tense of the verbs PUT and SAY is

TEXT

    Clifford the Big Red Dog looks fabulous on an iPad. He sounds good, too — tap the screen and hear him pant as a blue truck roars into the frame. “Go, truck, go!” cheers the narrator. But does this count as story time? Or is it just screen time for babies? It is a question that parents, pediatricians and researchers are struggling to answer as children’s books, just like all the other ones, migrate to digital media.

   

     For years, child development experts have advised parents to read to their children early and often, citing studies showing its linguistic, verbal and social benefits. In June, the American Academy of Pediatrics advised doctors to remind parents at every visit that they should read to their children from birth, prescribing books as enthusiastically as vaccines and vegetables.

   

     On the other hand, the academy strongly recommends no screen time for children under 2, and less than two hours a day for older children. 

   

     At a time when reading increasingly means swiping pages on a device, and app stores are bursting with reading programs and learning games aimed at infants and preschoolers, which bit of guidance should parents heed? 

   

     The answer, researchers say, is not yet entirely clear. “We know how children learn to read,” said Kyle Snow, the applied research director at the National Association for the Education of Young Children. “But we don’t know how that process will be affected by digital technology.” 

   

     Part of the problem is the newness of the devices. Tablets and e-readers have not been in widespread use long enough for the sorts of extended studies that will reveal their effects on learning.

   

     Dr. Pamela High, the pediatrician who wrote the June policy for the pediatrics group, said electronic books were intentionally not addressed. “We tried to do a strongly evidence-based policy statement on the issue of reading starting at a very young age,” she said. “And there isn’t any data, really, on e-books.”

   

    But a handful of new studies suggest that reading to a child from an electronic device undercuts the dynamic that drives language development. “There’s a lot of interaction when you’re reading a book with your child,” Dr. High said. “You’re turning pages, pointing at pictures, talking about the story. Those things are lost somewhat when you’re using an e-book.”

   

     In a 2013 study, researchers found that children ages 3 to 5 whose parents read to them from an electronic book had lower reading comprehension than children whose parents used traditional books. Part of the reason, they said, was that parents and children using an electronic device spent more time focusing on the device itself than on the story (a conclusion shared by at least two other studies).

 

     “Parents were literally putting their hands over the kids’ hands and saying, ‘Wait, don’t press the button yet. Finish this up first,’ ” said Dr. Julia Parish-Morris, a developmental psychologist at Children’s Hospital of Philadelphia and the lead author of the 2013 study that was conducted at Temple University. Parents who used conventional books were more likely to engage in what education researchers call “dialogic reading,” the sort of back-and-forth discussion of the story and its relation to the child’s life that research has shown are key to a child’s linguistic development.

   

     Complicating matters is that fewer and fewer children’s e-books can strictly be described as books, say researchers. As technology evolves, publishers are adding bells and whistles that encourage detours. “What we’re really after in reading to our children is behavior that sparks a conversation,” said Kathy Hirsh-Pasek, a professor of psychology at Temple and co-author of the 2013 study. “But if that book has things that disrupt the conversation, like a game plopped right in the middle of the story, then it’s not offering you the same advantages as an old-fashioned book.”

   

     Of course, e-book publishers and app developers point to interactivity as an educational advantage, not a distraction. Many of those bells and whistles — Clifford’s bark, the sleepy narration of “Goodnight Moon,” the appearance of the word “ham” when a child taps the ham in the Green Eggs and Ham app — help the child pick up language, they say.

   

     There is some evidence to bear out those claims, at least in relation to other technologies. A study by the University of Wisconsin in 2013 found that 2-year-olds learned words faster with an interactive app as opposed to one that required no action.

   

     But when it comes to learning language, researchers say, no piece of technology can substitute for a live instructor — even if the child appears to be paying close attention.

 

     Patricia K. Kuhl, a director of the Institute for Learning and Brain Sciences at the University of Washington, led a study in 2003 that compared a group of 9-month-old babies who were addressed in Mandarin by a live instructor with a group addressed in Mandarin by an instructor on a DVD. Children in a third group were exposed only to English.

 

    “The way the kids were staring at the screen, it seemed obvious they would learn better from the DVDs,” she said. But brain scans and language testing revealed that the DVD group “learned absolutely nothing,” Dr. Kuhl said. “Their brain measures looked just like the control group that had just been exposed to English. 

   

     The only group that learned was the live social interaction group.” In other words, “it’s being talked with, not being talked at,” that teaches children language, Dr. Hirsh-Pasek said. 

   

     Similarly, perhaps the biggest threat posed by e-books that read themselves to children, or engage them with games, is that they could lull parents into abdicating their educational responsibilities, said Mr. Snow of the National Association for the Education of Young Children. 

 

    “There’s the possibility for e-books to become the TV babysitters of this generation,” he said. “We don’t want parents to say, ‘There’s no reason for me to sit here and turn pages and tell my child how to read the word, because my iPad can do it.’ ” 

   

     But parents may find it difficult to avoid resorting to tablets. Even literacy advocates say the guidelines can be hard to follow, and that allowing limited screen time is not high on the list of parental missteps. “You might have an infant and think you’re down with the A.A.P. guidelines, and you don’t want your baby in front of a screen, but then you have a grandparent on Skype,” Mr. Snow said. “Should you really be tearing yourself apart? Maybe it’s not the world’s worst thing.” 

   

     “The issue is when you’re in the other room and Skyping with the baby cause he likes it,” he said. Even if screen time is here to stay as a part of American childhood, good old-fashioned books seem unlikely to disappear anytime soon. Parents note that there is an emotional component to paper-andink storybooks that, so far, does not seem to extend to their electronic counterparts, however engaging. 

From: www.nytimes.com, OCT. 11, 2014 

A
past perfect continuous.
B
simple past.
C
past perfect simple.
D
past continuous.