The origami course is complete and easy to learn.

Prepare tools/materials: a rectangular piece of paper.

Step 1: Prepare a rectangular piece of paper, preferably with a little hardness. (length: width =2: 1)

Step 2: Fold a right angle to the opposite side and restore.

Step 3: Fold the other right angle to the opposite side and restore it.

Step 4: Fold and align along the line parallel to the wide side and intersect the diagonal crease.

Step 5: After opening, it has a crease as shown in the figure.

Step 6: Leave a crease at the other end in the same way.

Step 7: Press the origami inward along the crease of parallel lines.

Step 8: Align the base angle (45) of the triangle with the top angle (right angle).

Step 9: All four bottom corners are folded in half like this.

Step 10: This time, align the bottom of the new small triangle with the right angle and fold it in half.

Step 11: All four new triangles are folded in half like this.

Step 12: Turn the origami upside down and align the top corners of the square diagonally.

Step 13: The two vertex angles are the same. Turn the lower vertex upwards to enlarge the holes on both sides of the triangle.

Step 14: Insert a gap corresponding to the top corner.

Step 15: Fix both sides.

Step 16: Fold the lower part of the origami inward at a proper position.

Step 17: Select a part from the folded part and fold it back, as shown in the figure.

Step 18: Press the jumping frog's ass after folding.

Step 19: Let go, the jumping frog will bounce.