For the whole class to share:

• tablet/laptop/computer and projector to show video and images to students
• digital scale

Each group needs:

• graduated cylinder
• measuring cup
• 3 cups water
• aluminum pan / plastic tub
• 2-3 oz. “algae” (such as rubber, small Styrofoam balls, oil with food coloring, wax paper—anything that floats on the water)

Suggested everyday materials for each group to choose from:

• aluminum foil
• Popsicle sticks
• pipe cleaners
• coffee filters
• glue
• tape
• Styrofoam balls
• yarn/thread
• modeling clay
• Play-Doh
• cardboard
• cotton balls
• food coloring
• plastic cups
• wire
• plastic or paper straws