Memory

This can be used by adults or kids through different levels ( easy, medium, hard ).

For the younger it is a developmental activity while for older it improve concentration.
Brain is just like muscles, it needs to exercise.

There's different grids:
- 2*2
- 2*3
- 3*4
- 4*5
- 4*6
- 5*8

Let test your photographic memory and boost your brain!