A hands-on rock and mineral classification activity. Children will explore the properties that geologists use to help them identify rocks and minerals (hardness, effervescence, streak color, magnetism, and appearance) using the supplies provided plus a couple of household items (vinegar, for example). Very portable for use in the field. Includes six “tools” for testing plus a 3X/6X dual magnifier and brief instructions. Detailed testing instructions available online from Fossilicious.com.