Use these cards to quickly group students by shape, number, or card color. This is a great way to organize students for discussions or sharing time. You can also use it in the younger grades to check color, shape, and number recognition. There are enough cards to group up to 40 students. The final set is an extra set that would be printed on white paper, so you can pass out as many of those as needed. Then, if you group students by their card color, just assign students with a white card to a different color group. That way you don't end up with six groups of six, and one group of two. The number of cards you use in each color set can also be adjusted to fit class or group size. The product is a PDF document.