20.Khan Lab School is bringing back the one-room model to teach young students in Mountain View,California.The school is(1)
laboratory for an experimental kind of learning.Silicon Valley,(2)
(know) for its technology companies,is also the birthplace of the school. Students aged 5 to 15 attend the experimental Khan Lab School,which(3)
(have) no grade levels and no homework.The students are in school from 8:30 in the morning until 6:00 at night.And, the school is open all year long,with small(4)
(break)here and there. The school is the idea of Salman Khan,the founder of Khan Academy --famous for its educational videos.The videos on the Internet are(5)
(total)free and have millions of users around the world. Khan said he(6)
(start) Khan Lab School because he thinks the present education system has problems.He hopes to create a(7)
(good) learning model. He said the one-room model lets the older students help younger students,(8)
means the younger children get a lot of help.They get the help of the teacher and the older students. Khan said students also learn the study material(9)
their own speed through videos.And,they get more attention through one-on-one discussions with teachers.They also learn by(10)