Meet Selenga
"Hello! I'm Selenga. Today we're opening an airplane factory! We'll build paper planes and race them to see which one flies the farthest. Let's get started!"
Why Paper Airplanes?
Building paper airplanes isn't just fun—it's a real physics lesson. The same forces that keep real planes in the air affect paper planes too: lift, thrust, gravity, and air resistance.
Better yet, different designs fly differently. This creates the perfect "why?" question that sparks curiosity.
Model 1: Classic Dart
The most popular design. Perfect for distance.
Instructions:
- Place an A4 sheet flat with the long edge facing you
- Fold the top two corners toward the center line (making a triangle)
- Fold that triangle down toward the center line again
- Fold the paper in half lengthwise
- Fold both wings down
- Curl the tail up slightly—ready to launch
Characteristic: Speed-focused, flies straight.
Model 2: Wide Wing
Slower but stays in the air longer.
Instructions:
- Place an A4 sheet with the short edge facing you
- Fold down 5 cm from the top, then fold again
- Fold the paper in half lengthwise
- Fold the wings at a wide angle
- Curl the wing tips slightly upward
Characteristic: Glides smoothly, uses air currents well.
Model 3: Delta Wing
Triangular body with broad wings.
Instructions:
- Fold the paper diagonally to create a large triangle
- Bring both side corners to the top corner—making a square
- Fold the top layer inward from both sides
- Fold the body in half
- Leave the wings open and wide
Characteristic: Most stable flight.
Model 4: Soaring Bird
Fun appearance, medium distance.
Instructions:
- Start like the Classic Dart
- Keep the wings wider
- Curl the wing tips upward
- Create a small thumb grip underneath the body
Characteristic: Makes turns, flies in curves.
Model 5: Mini Rocket
Small but speedy.
Instructions:
- Use one-quarter of an A4 sheet
- Fold like the Classic Dart
- Make very tight folds
- Create a sharp point at the nose
Characteristic: Compact and fast, travels far.
Racing Rules
Distance Race: Mark a launch line. Everyone gets 3 tries. Whoever's plane lands farthest wins.
Accuracy Race: Draw a target circle on the ground. Who lands closest to the center?
Duration Race: Who keeps their plane in the air longest? Use a stopwatch.
Style Race: Which plane performs the best tricks? Let the family vote.
The Physics Behind Flight
Lift: Air moves faster over the curved wing top, creating lower pressure. The higher pressure underneath pushes the plane up.
Thrust: The throwing motion pushes the plane forward.
Gravity: Pulls the plane down—the force to overcome.
Drag: Air resistance slows the plane down.
A sharper nose = less resistance = farther flight.
Questions to Explore
- Does heavier paper or lighter paper fly farther?
- Does changing the wing angle change how it flies?
- What happens if you add a small paperclip to the back?
- Is it better to throw with the wind or against it?
Frequently Asked Questions
My plane keeps dropping. What do I do? Curl the back wing edges up slightly. This acts like an elevator.
My plane curves to the left. Curl the right wing down a bit. This balances it.
Which model is best? Dart for distance, Wide Wing for duration, Delta for stability, and Bird for fun tricks.
For Parents
Turn this into a family tournament. Beyond "who throws farthest," add "who designs the best model." Ask your child to sketch their own airplane design—this is where engineering thinking begins. You might be surprised at their creativity!