Mai Lesson
Super Boat Challenge
Science · 30 min · Ages 9-11 · Upper elementary · You and your child together
This lesson challenges learners to design and build a small boat using simple materials, then test its ability to float and carry weight. They will discover the principles of buoyancy and density through hands-on experimentation and critical thinking.
What your child gets out of it
- Design and construct a boat capable of floating and carrying weight.
- Explain how boat shape and material distribution affect buoyancy.
- Identify factors that cause objects to float or sink.
What you need
- Aluminum Foil
- Pennies — You'll need lots for testing different designs. (or Small Coins, Marbles)
- Water
- Bowl Tub — Something big enough to float your boats in. (or Sink, Large Pot)
- Pencil — For sketching boat designs. (or Pen, Crayon)
- Paper — For sketching boat designs. (or Notebook Page, Scrap Paper)
- Paper Towels — For cleaning up any water spills. (or Dish Cloth, Old Rag)
How it runs
- Introduction · 5 min
- Explore & Plan · 8 min
- Discussion · 6 min
- Activity · 9 min
- Summary · 2 min
Why it matters
Naval architects and marine engineers use these exact principles to design everything from small boats to massive cargo ships and submarines.
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