July 8, "Sink or Float"

This class we investigated what sinks and what floats.
We started by recalling what we are studing right now. Littel scientists remembered that we are studing liquids, water to be exact.
Then we went on tot he topic of the class. Everybody has noticed already the poem. Since the poems have words and pictures, everyone is attracted, reading and learning. Our poem was "Sink and Float".

Rocks in the river,

Ice in a drink,

Some things float,

Some things sink!

(Before this class some children did not hear these wrods, some knew only "sink" as a spot where you wash your hands. )
Then we went on tot he experimental part. We recorded our observations in the journals.
Each scientist glued a picture of the glass. Then, after the experiment, they had to glue pictures to either bottom, if they sank, or top, if they swam.

We have figured out in the course of the experiment that a ball of playdough, a marble, a penny and an orange would sink, while an apple, a leaf and a pine cone will float. As you can see, one group of scientists have also figured out that playdough will dissolve in the water hence the dark color of the water in the container :-)
 Homepractice: I recommend to explore, while letting your little scientist prepare his fruit and vegetables, which will sink and which will float!