Each group needs:

• 10 Popsicle sticks
• five 10 cm lengths of wire or pipe cleaner
• cardboard square, at least 20cm square (for a student working surface)
• clay (~ 15cm x 12cm)
• plastic spoon
• pencil or wooden dowel
• Tunnel Engineering Design Worksheet
• (optional) Other objects around the classroom that could be used as tools for boring tunnels through clay

For the entire class to share:

• glue
• rulers
• water
• weights or heavy objects to use as weights (such as books)