The these designs are ready for CNC cutting machine and designed to be cut at approximately wide and the width of the slot is you can scale the file depending on the thickness of your sheet metal (Welding may be needed ).
Geoboards are a great tool for math. Plus they are fun for kids to play and explore with. While you could easily purchase a geoboard, why not have a bit of fun and make your own for a little less! So, after seeing the geoboard over at Spinner's End N
Minute to Win It: Puddle Jumper — fill three cups with water and line them up, setting a ping pong ball into the first one. The goal of this game is to blow the ping pong ball from one water-filled cup to the next.