Educators in the current century are constantly looking for the best spot to choose between individualized curriculum plans and teaching classes that are too crowded with pupils. They employ and incorporate technology, creative grouping of pupils, standardized tests and everything in between…

Now, the educational program is overloaded with tasks of different difficulty. Sometimes, students don’t understand the material for the first time. Many students don’t catch to absorb all new information. That’s why they want the information to be repeated several times or…