Each group needs:

• 1 paper bag containing 100 black and white beads, with black beads representing non-renewable energy resources and white beads representing renewable energy resources; the ratio of black to white beads varies by group

95 black beads + 5 white beads

90 black beads + 10 white beads

80 black beads + 20 white beads

70 black beads + 30 white beads

• small cloth
• extra bag
• calculator
• Renew-a-Bead Game Worksheet, one per student