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Indoor activity

Straw Rockets

Roll paper into a sleek rocket, add a sealed nose cone and paper fins, slide it onto a straw, and blast it into the air with one big puff! Perfect for budding aerospace engineers.

Ages 4-10 0-1 hours Education 7/10

Materials

  • Markers optional
  • Paper
  • Ruler optional
  • Scissors
  • Straws
  • Tape

Illustrated Steps

1

Roll the Rocket Body

Roll a strip of paper tightly around the straw to form a tube. Once it slides freely but snugly, tape the long edge down and slide the tube off the straw.

2

Seal the Nose Cone

Pinch the top end of the tube flat. Fold each corner diagonally to the centre to form a triangular point. Tape firmly so no air can escape through the nose.

3

Make and Attach the Fins

Cut a small paper square and fold it diagonally into a triangle. Tape the folded edge to the bottom of the rocket. Make 3 fins spaced evenly around the opening.

4

Decorate Your Rocket

Draw flames, windows, a mission number, or your name along the rocket body using markers. Make it legendary — this is your spacecraft!

5

Launch Your Rocket

Slide the open end of the rocket onto the straw. Point at a 45° angle and blow hard and sharp into the other end. Watch it fly!

What You’ll Create

You and your child will build a real working rocket from nothing but paper, tape, and a straw! 🚀✨ The secret is simple but brilliant: a paper tube that slides snugly over the straw and is sealed at the top. When you blow hard into the straw, the air pressure builds up and launches the rocket off like a shot. Add fins and a nose cone for stability, and you have a rocket that can fly several metres across the room!

How to Set It Up

Step 1: Roll the Rocket Body

Tear off a strip of paper about 20 cm long and 10 cm wide. Place it against the straw and roll it tightly around the straw lengthways to form a narrow tube. Keep rolling until the tube feels snug but can still slide freely on and off the straw. Tape the long edge down firmly with a strip of tape so it won’t unroll. Slide the paper tube off the straw.

Step 2: Seal the Nose Cone

Hold the paper tube upright. Pinch the TOP end flat between your thumb and finger. Fold the left flat corner diagonally down towards the centre of the tube. Then fold the right flat corner diagonally down to meet it. You should have a triangular pointed tip. Press the folds firmly and tape them in place so the nose is completely sealed — no air can escape through the top!

Step 3: Make and Attach the Fins

Cut a small square of paper, roughly 4 cm × 4 cm. Fold it in half diagonally to make a triangle. Tape the folded edge against the BOTTOM of your rocket tube so the pointed triangle sticks out sideways as a fin. Make 3 fins this way, spacing them equally around the bottom opening of the rocket.

Step 4: Decorate Your Rocket

Use markers to bring your rocket to life! Draw flames shooting out from the bottom, windows, a flag, a mission number, or your child’s name along the side. This is your rocket — make it legendary! Let the ink dry for a moment before launch.

Step 5: Launch Your Rocket

Slide the OPEN bottom end of your rocket onto one end of the straw. Point the straw upwards at about a 45° angle (NOT straight up — it may come back down on you!). Take a deep breath, then blow sharply and hard into the other end of the straw. Your rocket will shoot off and fly across the room!

Have fun!

  • 🏆 Mark a target on the wall with tape and see if you can hit it from further and further away.
  • 🔬 Try different fin shapes — wide triangles vs narrow ones — and see which flies straightest.
  • 🏁 Make one rocket each and race to see whose flies furthest from the same spot.
  • 📐 Experiment with launch angle — does 45° fly furthest, or is a steeper angle better?
  • 🎨 Build a whole fleet of rockets, each with a different colour scheme and mission name.

Why It’s Amazing

  • Physics in Action: Children discover how air pressure propels objects — the same principle behind real jet engines! 🔬
  • Engineering Thinking: Designing stable fins introduces the concept of aerodynamics and why rockets are shaped the way they are. 🏗️
  • Fine Motor Skills: Rolling, taping, and folding the paper tube and nose cone develops precise hand control. ✂️
  • Scientific Method: Testing different designs (fin size, launch angle) and comparing results builds genuine experimental thinking. 📊

Pro Tips

For ages 4–6: Pre-cut the paper strips and let them do the rolling with help. Simplify the nose cone by just folding the end flat once and taping it. The flying is the reward!

For ages 6–10: Challenge them to make the longest-flying rocket. Introduce the vocabulary: thrust (your breath), drag (air resistance), and stability (what fins do).

⚠️ Safety note: Point rockets away from faces and never at other people. Aim for open spaces or against a wall.