(5 minutes or less)
Roll three of the sheets of paper into paper tubes that are 11 inches (28 cm) long and about 1/2 inch (1.3 cm) in diameter. Use tape to keep the tubes from unrolling. Squash one of the tubes so that its cross-section is a very flat oval.
Cut one piece of paper into a strip that is about 2 1/2 inches (6.4 cm) wide and 11 inches (28 cm) long. Roll this strip into a tube that is about 1/2 inch (1.3 cm) in diameter and 11 inches (28 cm) long.
With these tubes, you can perform a variety of experiments. Each has its own "To Do and Notice" and "What's Going On." Try all four!
You can use paper towel tubes for all but the last of these experiments