Can pink star glasses REALLY make everything funnier? When two teachers discover mysterious Giggle Glasses, they design a secret experiment. Two classrooms, same story, but only one class wears the glasses - and they don't even know they're special! Watch how researchers test what truly causes what! Classroom adventures that reveal how scientists find the truth. Prepare for "aha!" moments at any age!
Building tomorrow's problem-solvers, one story at a time.
This is Volume 2 of the Impact Evaluation Series for Children. It is a brief introduction to Random Assignment.
外文書商品之書封，為出版社提供之樣本。實際出貨商品，以出版社所提供之現有版本為主。部份書籍，因出版社供應狀況特殊，匯率將依實際狀況做調整。
無庫存之商品，在您完成訂單程序之後，將以空運的方式為你下單調貨。為了縮短等待的時間，建議您將外文書與其他商品分開下單，以獲得最快的取貨速度，平均調貨時間為1~2個月。
為了保護您的權益，「三民網路書店」提供會員七日商品鑑賞期(收到商品為起始日)。
若要辦理退貨，請在商品鑑賞期內寄回，且商品必須是全新狀態與完整包裝(商品、附件、發票、隨貨贈品等)否則恕不接受退貨。
