An activity aimed at reinforcing the properties of substances by dividing the given substances into groups according to the desired properties.
1. absorbs water in effectiveness, does not absorb water, solid, brittle In the 2nd activity, flexible, firm, soft, hard In the 3rd activity, being attracted by the magnet, not being attracted, conducting electricity, not conducting electricity. 4. Glossy, matte, transparent, translucent, opaque in effectiveness will be divided into groups as follows.
