Instructions
1. Stack 2 pillars of books, and place the rod across the two stacks.
2. Blow the balloons up, tie the balloon ends and attach 1 string to each balloon.
3. Tie the strings to the rod, so that the balloons hang freely from the rod.
Make sure the balloons are the same height.
4. Blow between the balloons, can you blow them apart? Try using a hairdryer! Why cant you do it?