Random collections.

This week we began to sort random collections. We used bottle caps to sort collections into different groups.
One property collections - these were collections of caps with one thing in common.
Two property collections - these were collections of caps with two things in common.
Three property collections - these were collections of caps with three things in common.
Four property collections - these were collections of caps with four things in common.

There are four rules for sorting collections, they are;
Size

Colour

Texture

Shape


Why dont you collect different things at home and sort them into collections using these four rules??