Take one of the parts of the pyramid, show it to the child, noting the color. Ask the child to find the other parts of the same color. It will develop color recognition and grouping skills. Then you can count how many parts of that color the pyramid has. It will contribute to the development of simple arithmetic skills. Arrange the parts of the pyramid irregularly on the table and ask the child to group them according to the shape. It will contribute to the development of attention and thinking.