So much so that some teachers have had to sneak phonics teaching materials into the classroom.

这样一来一些老师不得不将语音教学法的教材偷偷带进课堂。

She records her classes by using an interactive device at school. Then, students have two ways to get the teaching materials.

她在学校使用互动设备录下课程。随后，学生有两种获取教材的方法。