Sand rocks, lava rocks and heat and pressure rocks

Last week we finished up our unit on plants. I will have more pictures soon of our sock heads that we planted grass seed in. I am hoping that they will start growing soon. I used a different soil this time so I am a little worried that they may not grow as well. For cooking we made a "dirt pie" basically just a chocolate oreo pie and the kids loved it.

On thursday we started our rock unit. I taught them about the 3 different ways that rocks are made.

Sedimentary Rocks (sand rocks) form over thousands of years of sediment laying in water.

We alo learned about Igneous Rocks (lava rocks): rocks that form when molten lava cools. This was the kids favorite of course making melted chocolate and letting it cool into their lava rock. 

I didn't take picture of our last rock but it is the metamorphic rock (heat and pressure rocks) these are formed when igneous and sedimentary rocks change into a new rock because of heat and pressure. We layered igneous (honey) and sedimentary(bread) rock and then we put a lot of pressure on them. I actually sat on it and squished it. They thought is was funny to see me sit on the food. Next week they are bringing their own rock collection for us to do some experiments on. Each kid will get to be a geologist. 

P.S. Tomorrow we have 2 surprises, can't wait to show the kids what they are :)