It's difficult to explain to a 5 year old how rocks are formed. Good thing, we read this book Rocks and Minerals (Investigations)
Igneous Rocks. These rocks are formed when hot molten rocks, magma or lava are cooled into solid. Here melt the sugar and let it solidify.
Heat brown sugar with little water on it into high temperature. Mix the sugar and water while it is heating. Allow it to boil for a while, but don't burn it (turn into black). When it is piping hot, pour the mixture into a cool baking try. I placed our sugar mixture into a chilled baking paper. After a few minutes, the sugar will turn into a glassy and brittle toffee. This process is similar to how igneous rocks are formed and their characteristics which are glassy or smooth and grainy.
My son can't get enough so we made a second version. This time, we poured the boiling sugar mixture in a bowl filled with cold water.
Sedimentary Rocks. These rocks are formed as small particles of sand, minerals, shells, mud or any matter accumulate at the bottom of the seas, lakes or in deserts.
A multi-layer of sandwich is like a strata rock. The first layer is a slice of bread, and each filing is laid on top with more slices of bread.
We prepared two sandwiches here, and Mavi's version is the one with sausage and cheese. Notice the differences in the thickness and colors of layers. Similar to the characteristic of a sedimentary rock.
Metamorphic Rocks. Metamorphic means "change". These are formed when igneous or sedimentary rocks are subjected to high temperatures or are crushed by high pressures underground. So to create our metamorphic rocks, we used our sedimentary rock models and added pressure (Mavi) and heat (mine) on them.
We enjoyed our snacks that afternoon. It was a fun preparing the sandwiches and a good way to learn.
Linking to:
Montessori Monday
TGIF Linky Party
Teach Beside Me
Preschool Corner
Teaching Mama
I Can Teach My Child
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