It is common task to memorize word by word lines from verses and prose for toddlers, schoolchildren and even students for their L1 and foreign language.
I've noticed that such activity put lots of pressure on a student and we had extremely small amount of such assignments in comparison to other activities (solving tasks, writing essays, analyzing grammar).
Is there some scientific ground for text memorizing assignments?
Is it only for children? How about adults?
Does it help with a language acquisition or just makes memory stronger?