Milk Carton Boats

Turn empty milk cartons into floating boats for a fun and creative project! Kids love designing and racing their boats, learning about buoyancy and engineering in the process.

STEMCreative
AgeAges 5โ€“10
Duration40 min
DifficultyMedium
CostFree
LocationBoth

Educational Value

Introduces concepts of buoyancy and engineering while encouraging creativity in design.

Materials Needed

Prep progress

Step-by-Step Instructions

  1. 1

    Rinse out the empty milk carton and let it dry completely.

  2. 2

    Using scissors, carefully cut the top off the milk carton to create the boatโ€™s hull.

  3. 3

    Design the outside of the boat using markers or paint to add colors and decorations.

  4. 4

    Cut a small triangle or rectangle from a piece of paper or plastic to serve as the sail.

  5. 5

    Attach the sail to the center of the boat using waterproof tape, ensuring it is secure.

  6. 6

    Fill a tub or small pool with water and place the boat in to check if it floats.

  7. 7

    If the boat sinks, adjust the design or add more tape for stability.

  8. 8

    Once satisfied, race the boats against each other in the water!

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Frequently Asked Questions

What materials do I need for Milk Carton Boats?
You'll need: 1 empty milk carton, scissors, waterproof tape, markers or paint, small sail (e.g., paper or plastic). Most items are common household supplies.
What age is Milk Carton Boats best for?
This activity is designed for children ages 5 to 10. Difficulty level: medium. You can adapt the steps for younger or older kids.
How long does Milk Carton Boats take?
Plan for about 40 minutes. Most families complete it in one sitting.
Is Milk Carton Boats an indoor or outdoor activity?
This activity works both indoors and outdoors โ€” choose whatever suits your space.
What will my child learn from Milk Carton Boats?
Introduces concepts of buoyancy and engineering while encouraging creativity in design.

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