- A group should have:
1. A scale (for mass)
2. Measuring sylinder (for volume)
3. A sample to be measured.
4. If the sample consists of objects of very complicated form, about 50 ml of water.
5. Each in the group should have a table for observations.

- Measure mass and volume of the sample at least ten times. Values should be distinct from each other.
- Analyse the data measured with Geogebra -take a screenshot of the picture.
- Return a file that contains the screenshot and a short report of the result, compare the density measured with value of tablebook.