You should use items that are in your child’s environment when teaching them about colors and/or shapes because this feels natural and easy
A fruit could help in this type of scenario, for example: a yellow banana. Once you tell your child ”yellow banana,” you can then point out anything that is yellow throughout the day. Pointing out a specific color or shape will help a child grasp this type of concept.
Build Upon Basic Concepts
After the first point, you can then start grouping similar objects together to really solidify the concept in your child’s mind. This means helping a child find shapes in their everyday environment. (A square napkin, a coat hanger shaped like a triangle, etc).
You should show your child, rather than telling them. Hold onto your child’s finger as you trace a shape using finger paints or through sand. Your child can then practice drawing shapes by themselves by using a paintbrush or large crayons.
Play With Shapes & Colors
You can then try setting up activities for small children that will allow them to visually identify similarities and differences between different shapes and colors. You can also set up an activity where you and your child line up all the green toys in the house, or organize blocks by shape while saying the name of each shape as you go.