Baby sign language is a growing movement. Pointing to a color1ful flower, Campbell lifts her baby's soft hand, and rapidly moves it from one side of his nose to the other as she sniffs ."Flower!" she says loudly. Gregory smiles and looks carefully. It could be a year before Gregory, 4 months old, can speak, but now his mother hopes to communicate with her baby through sign language. 

Like others around the world, Campbell is part of a growing movement of parents teaching hearing babies simple signs to communicate before they can talk. The baby sign language has been more popular in recent years. The movie,"Meet the Fockers",where the main character teaches his young grandson to sign, makes it well developed. 

Babies generally begin to talk between 12 and 15 months, but babies can use sign language to communicate before they learn how to speak. 

"We know they are learning language faster than they are able to show you with their speech production because that system takes a long time to develop." says McRoberts, director of developmental research at the Haskins Laboratories. 

"They are understanding words before they are able to say them. From around 16 to 18 months, they might say 50 words but understand 200.They understand short sentences well." says McRoberts. 

Studies have shown deaf children learn to use sign language earlier than hearing children learn to speak meaningfully. As to whether hearing babies can communicate earlier with sign language, McRoberts says,"I think that's still unknown. It may not. I'm very interested in that very question."

Answer this series of questions:

1. when do babies begin to talk?
2. do they understand words before saying them?
3. by when may they say 50?
4. and understand how many?
5. what is the article about?
6. what is the mothers name?
7. how old is her baby?
8. who is doing the research?
9. where does he work?
10. as?
11. what made the language popular?
12. how?
13. what is the baby's name here?
14. what does mother show him?
15. what does she hope to achieve?
16. are babies learning faster?
17. what do studies show about babies who can't hear?
18. does mother speak while teaching signs?
19. what does she say?
20. how long before Gregory can speak?

Numbered answers:
1. between 12 and 15 months
2. yes
3. around 16 to 18 months
4. 200
5. Baby sign language
6. Campbell
7. 4 months
8. McRoberts
9. Haskins Laboratories
10. director of developmental research
11. Meet the Fockers
12. the main character teaches his young grandson to sign
13. Gregory
14. a colorful flower
15. to communicate with her baby through sign language
16. yes
17. deaf children learn to use sign language earlier than hearing children learn to speak meaningfully
18. yes
19. "Flower!"
20. It could be a year