Each group needs:

• 5 index cards, labeled with incremental point values (100, 200, 300, 400, 500)
• Pens or pencils
• Textbooks or other resources about rocks to use as reference materials for writing questions and answers.

To share with the entire class:

• 5-10 index cards, labeled with category topic
• Tape, to affix index cards to the board or wall
• (optional) Rewards for each team (such as candy, pencils, stickers or other small prizes)
• (optional) A reward for the winning team