Rattlesnake Eggs!

Explore animal adaptations, while playing a prank on your class! All you need is an envelope, one paperclip, and a rubber band. When someone opens the envelope, they jump back because the sound of a rattlesnake projects from inside!

Click here for a video tutorial (easy construction: 3 materials)
Check out the prank in action here! (Instructions with metal washer or button)
Instructions here using 2 clips
Instructions with soda cap

After you scare everyone, ask kids, "Why do rattlesnakes have a special tail?"