2nd Grade Explores Volcanic Rocks

Three very different looking rocks....how can we describe them?  How are they the same?  How are they different? What happens when we rub the rocks together? 2nd graders are starting to learn about properties of rocks:size, shape, luster, texture, color and even hardness.

All of the rocks are about the same size.

The white rock is smooth.

Look at the holes in these rocks!

The gray rock is heavier than the other rocks.

This rock feels rough and bumpy.

I'm making red rock dust!

The white rock makes flakes of dust.

The gray rocks don't make any dust, but they do
make lines on the rock!

It's like snow.

I can smell the rock when I rub them together!