What is a Geode?
Geodes are formed from fluids which crystallize in cavities within a rounded rock or nodule. Geodes are found in many parts of the world. The geodes contained in this set are from Mexico; 90% of them have hollow centers lined with crystals. Break open yours and look for the hidden crystals!
How to Break Open Your Geodes
Put the geode in a bag or sock. Hit it firmly with a hammer, aiming for the center - safety glasses and adult supervision are recommended.
This is a great clean heat demonstration model for the classroom setting!
The Hoberman Sphere expands and contracts with a magical motion so fluid and simple that kids can't help but play with it for hours.
Working model representing the sun, earth, and moon and their relationships.
With 23 hands-on experiments, you can investigate specific weather phenomena as well as the climate system in general.
Shake the Pet Tornado clockwise and watch the mini tornado funnel form before your eyes!
Discover how solar cells make electricity with this awesome kit!