Sunday, November 18, 2012

Chocolate Rocks

My class is working on Earth Science and what better way to way to work on that, but to make rocks out of chocolate!  We had a free morning, so here’s what we did:

We started by cutting up a big hunk of chocolate into nice big chunks to melt down into “lava”.
Free printable sheet to guide students through the process of making candy rocks.     Free printable sheet to guide students through the process of making candy rocks.
We also chopped up some nuts to stand for our “minerals” that mix into our “lava” during heating.  Then, we scooped our rocks onto a tray to let them cool into our “igneous rocks”.
Free printable sheet to guide students through the process of making candy rocks.     Free printable sheet to guide students through the process of making candy rocks.
Next, we started in our “sedimentary rocks”.  On top our our cookie “layered rocks”, we layered melted chocolate, chunk chocolate and nuts.  Then, we covered the “rocks” with plastic wrap and worked together to apply pressure to our “sedimentary rocks”.
Free printable sheet to guide students through the process of making candy rocks.     Free printable sheet to guide students through the process of making candy rocks.
Finally, we made our “metamorphic rocks” by placing our pre-formed sedimentary rocks into the microwave for some quick “heat” and applied more pressure.  This time, however, the pressure was applied by just me, as it was a sticky, chocolately mess!  Of course, at the end, we at our yummy products!
Free printable sheet to guide students through the process of making candy rocks.     Free printable sheet to guide students through the process of making candy rocks.
Throughout the entire process, my students had a data collection sheet that they used to record what their rocks looked like, and keep them busy Free printable sheet to guide students through the process of making candy rocks.through the transition time that generally occurs in all cooking activities.  Feel free to download a copy of this sheet from Google Docs if your class wants to make Chocolate Rocks too.

Heidi Raki of Raki's Rad Resources