This origami frog is a traditional model that can be made to jump when you scratch its back. Use either green colored paper for your frog or any color you like. Practice with a square of plain white copy or typing paper first and then move on to colored or patterned paper.
Before you begin folding, make sure that your work surface is hard, flat, and stable. This will help you produce sharper creases – essential elements of any successful origami project and this project in particular. A ruler or pencil edge run over your creases will also add to their sharpness.
- Place a square of paper on your work surface and position it so that its edges are facing up and down, left and right. If you are using two-sided paper, make sure that the color for the body of the frog is facing down at this point.
- Bring the left edge over to meet the right edge. Crease and unfold.
- Bring the top edge down to meet the bottom edge. Crease and unfold.
- Turn the square over and position it so that its points are now facing up and down, left and right.
- Bring the left point over to meet the right point. Crease and unfold.
- Bring the top point down to meet the bottom point. Crease and leave folded.
- Grasp the left and right points of the resulting triangle and push inward. This will cause the model to collapse along the folds you just made. The result will be another triangle shape with a folded flap sticking out from the back of the model and another sticking out from the front.
- Fold the front flap to the left and fold the back flap to the right so that your model will lie flat. Position your model so that it is flat against your work surface and the open end is facing toward you.
- Bring the left edge (top layer only) over to meet the vertical center crease. Crease and leave folded. Repeat for the right edge. There should now be two long, triangular flaps at the center of the model.
- Bring the long right edge of the left triangular flap made in Step 9 over to meet the flap’s folded edge. Crease and leave folded. Repeat for the right triangular flap. Turn the model over. You should now see a triangular shape with two folded flaps (the frog’s back legs) sticking out from the bottom. The next steps will refer only to this triangular shape.
- Bring the lower-left point of the model up to meet the top point. Crease and leave folded. Repeat for the lower right point.
- Bring the top point of the left flap made in Step 11 down to the left point of the model. Repeat for the right flap so that the model is symmetrical. This will create 2 very small triangular-shaped flaps at the center of the model.
- Bring the left point of the very small triangular flap made in Step 12 up to the flap’s top point. Repeat for the right flap so that the model is symmetrical. This creates the frog’s front legs.
- Bring the bottom edge of the model under and to the back of the model just far enough so that the bottom tip of the diamond shape is folded under. Crease and unfold.
- Bring the crease line made in Step 14 up toward the center of the model until it is just below the frog’s front legs. Crease and leave folded. This creates a sort of spring that will allow the frog to jump. Make sure the crease is as sharp as possible – this might prove to be a bit difficult as there are multiple layers of paper involved. Turn the model over
- Make the frog jump by scratching one finger down its back.