Shake The Tree
… and ten “apples” are splitting into two collecting tubes with scale. On the front side of the tree you can only see the content of one tube.
Set up an equitation and calculate the covered subset. An easily self-control is given by turning around the tree and having a look on the second tube. Thanks to the press-lock you can vary the number of “apples” .
- 1 plastic tree (height: 12 cm)
- 10 plastic beads