Put a seven-year-old in front of a pile of building blocks and ask for all the red ones, and they will often miss the one hiding under the others. This 2nd grade Venn diagram color counting worksheet trains that search. Each of the six boxes holds two overlapping circles, circle A and circle B, filled with stars, hexagons, triangles, rectangles and circles. Some shapes sit in one circle, some in the middle, and some lie outside both, while each question names one color, such as yellow or purple. Your child counts every shape of that color and ticks one of four numbers. A second page gives the answer key.