How to make a coin sorting machine with cardboard | The Kid Should See This | iPads, MakerEd and More  in Education | Scoop.it
With some thick cardboard, a cutting knife, some hot glue, a ruler, and probably a bit of trial and error, you can create your own DIY coin sorting machine. The key to the sorting “mechanism” is to cut the right size holes in the correct order—smallest to largest. Watch this how-to video from The Q.