在集体教学中，立足于学生的个体间差异，帮助每个学生制定与之能力水平相匹配的学习目标，采用不同类型、不同难度水平的学习卡片，满足智力障碍学生学习和发展的不同需要。学...

在实际操作中，手动式卡片打孔机应用广泛，但大多属于连杆机构，必须经过中间构件进行传动，因而传递路线较长，易产生较大的误差积累，同时，也使机械效率降低。如果将原来的...

Nowadays, English teachers are confused about how to help their students learn more words in a short time which is often called learning efficiency. Flashcards can help teachers a lot in this way. And it is important and wise for them to fin...