How to Make an Origami Frog
All that you need is a sheet of paper. The regular one works best as it's easy to fold and it's light which does make an impact on how the frog jumps. You can have the kids experiment different kinds of paper (and different sizes) - I think it would make a fun activity where kids will be able to see what an impact the weight of the paper has on the end product.
Fold it diagonally and in horizontally (you should get folds as shown on the picture 4).
Fold the corners (as seen in picture 2 and 3) and fold them again as seen in picture 4 & 5.
The last folds - the distance between them make a huge impact on how the frog jumps (or doesn't) so be sure to make more than one and give them a test run!