Each group needs:

• 4-5 jumbo marshmallows
• ½ stick butter
• 4 cups Rice Krispies® (or similar puffed rice cereal)
• 4-5 small cupcake wrappers (aka paper "cupcake cups")
• 2 cups chocolate chips
• 2 zinc-plated nails
• 1 muffin pan (disposable pans suffice)
• 1 plastic spoon
• 1 ruler
• 1 wooden block, ~3 inches x 3 inches x ½ inch (8 cm x 8 cm x 1 cm)
• 1 microwave-safe container
• computer with Microsoft Excel® or similar software

For the teacher demonstration:

• 1 jumbo marshmallow
• 1 ruler
• 1 wooden block, ~3 inches x 3 inches x ½ inch (8 cm x 8 cm x 1 cm)
• Rebuilding New Orleans Composite Materials Lab Handout, one per student

To share with the entire class:

• microwave
• balance/scale
• (optional) flexi force sensor; see https://learn.adafruit.com/force-sensitive-resistor-fsr/using-an-fsr
• (optional) microcontroller, such as the Arduino Uno R3 for $25 at https://www.adafruit.com/product/50
• 1 weight set with 4-5 different weights 50 g – 500 g