Simply print the pages in color. Add a construction paper back and laminate. Page one serves as a work mat. Page two is intended for use as sorting cards. Cut each shape out along the square to yield 9 small sorting cards. For play, each student receives one mat and the 9 cards. They sort each card/shape into it's correct 3-D group. Helpful hint:I print 6 sets and use them at the developmental center tables during work time.