A terrific way to help students remember shapes and shape words. Put one up on the wall when you are studying that particular shape; use them as jumbo flashcards; shrink them to make Concentration Memory Match games for students. Put 2 next to each other and have students compare and contrast them.
Make a shape bulletin board and display all of them there. Play what's the shape? Mystery game. Each day put one of the shapes face down on the board. Give clues about the shape and have the students guess which one is the mystery shape of the day that is "hiding". Pass them out to students and play I have; Who has? "I have the circle shape. Who has the triangle shape?"