Daily necessities or toys
You can prepare some daily necessities or toys of different colors. It is a solid color, not a transitional tone, so as not to confuse children and not recognize colors correctly.
Small white rectangular card
You can find some small white rectangular cards and draw different colors on them with colored pens with your children. Then let the children sort the cards by color.
Go out for a walk
You can seize the opportunity to take your child out for a walk and use the surrounding scenery to educate your child on color. For example, tell him that the leaves are green, the flowers are yellow, the sunset is red, the sky is blue and the clouds are white ... Then, let the children repeat.
color lump
You can also spell out a big color sample with colored cardboard at home. Write down the name of the color with a post-it note and paste it on the corresponding color, then let the children identify it.
Colored plastic clip
Colored plastic clips used to dry clothes or seal plastic bags can also be good props. Prepare some colored cardboard, cut it into small pieces with scissors, and let the children hold the cardboard of the same color with clips of various colors.