B-MAT(ビーマット) | ２つの「考える」で学力センスを鍛えるためのシステムです。

The tile represents very important item in the sense of flatness.
When solving problem of the tile, you must not use any formula of the area even if you know it.

Solving the problem alone is easy by using the formula but even if you got the correct answer this way, your sense (sensory components) would not be much developed.
The solution of the tile problem should follow the way of thinking shown in the example problem.
Questions using tiles can be solved by applying some idea as shown in the examples.

A sense of flatness will be developed.
In particular, a sense to image areas will be cultivated.