Summer Water Activities for Kids

Milk Carton Waterwheel Activity

These milk carton waterwheels are sure to keep you cool.
These milk carton waterwheels are sure to keep you cool.
©2007 Publications International, Ltd.

The milk carton waterwheel activity puts Newton's third law -- "Every action has an equal and opposite reaction" -- to the test! Have fun proving that law -- but do this project outside, as it will get things quite wet!

The milk carton waterwheel is a fun way to play with water on a hot, sunny day. Put on your thinking caps and your bathing suits! An adult may need to help kids out when they do this summer water activity.

What You'll Need:

  • Paper milk carton
  • Pencil
  • Scissors
  • String
  • Water

How to Make a Milk Carton Waterwheel:

Step 1: Use a pencil to poke a hole in the bottom left-hand corner of each of the four sides of a paper, half-gallon milk carton.

Step 2: With scissors, poke a hole in the top flap of the milk carton (an adult may need to help kids do this).

Step 3: Tie a string through this hole, and tie the carton to a tree branch or something similar.

Step 4: While covering the holes in the milk carton with your fingers, have a helper pour water into the carton.

When the carton is filled, take your fingers off the holes and see what happens to the milk carton as the water flows out. You've created a waterwheel!

A thick layer of fat helps animals keep warm in icy climates. Kids can try this for themselves with the activity on the next page -- no weight gain required.

For more fun activities and crafts, try: