You will need:

• 2 small to medium balloons

• Scotch tape

• Colored markers

• A floor fan

Instructions:

Blow up the two balloons and tie the ends. Tape the two knotted ends together. Use markers to decorate the balloons like butterfly wings. Tip the fan so the air blows toward the ceiling. Hold your butterfly over the fan and let go. See how long your butterfly can float! Make several and see which one stays up the longest.