Thursday, March 1, 2012

Rocks Rock!

As scientists, we are continuing our study of rocks, soil, and sand.  We have learned how to use a new scientific tool - the sifting screen.  This tool allows smaller objects to pass through while larger objects remain on top.  There are three sizes of screens, meaning we can sort in many different ways!

We noticed the similarities and differences between large rocks, pebbles, gravel, and sand.  They are all very alike and very different at the same time!  We sorted and categorized the Earth materials while practicing the use of of the sifting screen.



We will soon begin making things using these Earth materials - from bricks to sand sculptures, Earth materials can be used to make lots of things!