• Large sheet of paper
• Tape
• Dirt or stamp pad
• Ruler or meter stick
  

How high do you think you can you jump? Get some of your friends together to find out.

• Tape a large piece of paper to the wall. (Brown wrapping paper or sheets of newspaper will do.) The shortest person in your group should be able to reach the bottom of the paper without standing on tiptoes.
• Dip one finger in dirt or ink. While standing with your feet flat on the floor, stretch your arm as far as you can and mark the highest point you can reach on the paper.
• Now jump and mark the paper by touching it at the top of your jump. Try it a few times and challenge your friends to jump higher. (Label each person's standing and jumping marks with initials or have each person use a different color of ink or dirt.)
• Use a ruler or meter stick to measure the vertical difference in height between your standing and jumping marks. This is how high you can jump. Surprised?