Buoyancy experiments

A Set of 5 Unique Cubes: Fun Educational Activity

Here’s a simple yet engaging way to spark curiosity and discussion using cubes with unique properties:

• 3 cubes have the same volume but different masses.
• 3 cubes have the same mass but different volumes.
   

How to spark an interesting discussion

1) Start with a Sorting Task
Place all 5 cubes on a table and challenge participants:

Sort those cubes by weight.

2) Measure and Compare
If you have a precise scale, weigh the cubes to identify the heaviest. Key observation: Three of the cubes have the same mass (two larger cubes and the heaviest of the same-sized ones).

3)  Explore Buoyancy

Pick the three same-sized cubes and ask:

Which of these will float?

Test assumptions water.

4) Add a Twist with Layers
 - Prepare a glass filled halfway with water and halfway with oil.
 - Repeat the buoyancy test and observe how the cubes behave in the different layers.

5) Experiment with More Layers
If you have honey or corn syrup, create a three-layer liquid:

Honey → Water → Oil.
Test the cubes again and discuss their behavior in the denser liquid layers.

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Print instructions

If you used print profile (or “Open im Bambu Lab” button) you dont have to do anything. If you downloaded STL's you'll have to setup print profile manually:

- 0.4 nozzle, 3 walls, 0.2 layer height
- Small cubes: 98%, 72%, 15%
- Medium cube: 35%
- Large cube: 9%