Rockology 101

Welcome to class! This is a place for students of all ages to learn about Rogers Group operations and products or just have a little fun!

Rockology 101: Learning
Rockology 101: Fun Facts
Rockology 101: Activities
Activity: Properties of Stone
Activity: Homemade Stones
Activity: Cookie Mining
Activity: A Tasty Core Sample
Activity: Making a Quarry Shot
Activity: Sedimentary Rock
Activity: Metamorphic Rock
Activity: Igneous Rock
Activity: Fake Fossil Casts
Activity: Chocolate Asphalt Cookies
Activity: Concrete Milkshake
Activity: Amazing Rock Candy
Activity: Homemade Toothpaste
Activity: Borax Silly Putty
Activity: Sandy Decorative Bottles
Activity: Aggregate Word Search

Homemade Stones

You will need:

1 cup white flour

½ cup salt

2 tsp alum

½ cup water

5 drops red food coloring

5 drops blue food coloring

3 drops yellow food coloring

1 cup coarse sand

½ cup gravel (2 colors – could use aquarium gravel)

1/8 cup oyster shells (really anything else could be added)

Please have an adult's supervision for this activity.

Students should make Homemade Stones about 1 week in advance of this lesson.

Mix the flour, sale and alum together in a large zip bag.

Add the water and food coloring. Knead the mixture until it is uniform in color and texture and no longer sticks to the sides of the bag. If needed, add more water if the dough is too crumbly.

Add the sand and the gravel mixture. Knead.

Divide the mixture into 18 ping pong size balls. Place the stone ball in your hand and with your thumb make a depression, sprinkle in oyster shells, then mold the dough around them.

Flatten the stone. Put them on the plate to dry. Turn every day until dry. Do not microwave or oven bake the stones -- they will get too hard.

If they get too hard, sprinkle them with water and let them sit awhile before using them.