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

Step 2: Fold a rectangular corner to the opposite side and restore it.

Step 3: Fold the other rectangular corner to the opposite side and restore it.

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

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

Step 6: Leave this crease on the other end in the same way.

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

Step 8: Align the bottom 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: Four new triangles are all folded in half like this.

Step 12: Turn the origami over, and align the top corner of the square in half along the diagonal.

Step 13: Both vertex angles are the same, turn the lower vertex upwards and expand the holes on both sides of the triangle.

Step 14: A vertex angle is correspondingly inserted into a gap.

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 it is folded.

Step 19: Let go and the jumping frog can bounce.