No flimsy frames-each die cut is a solid rectangle. Set features two sizes of magnetic frames. Large frames help teachers demonstrate base ten and operation concept on the classroom whiteboard. Smaller frames are great for students practice on a magnetic lap board. Inclues 2 large demo frames 4 student frames and 60 magnetic two-color counters (double sided red/yellow). Demo Frames measure 15" W x 6.19" H.