Today I gave my second 4H demonstration of the year and then I led a club activity and showed everyone how to make hovercrafts out of household items.
The hovercraft works when air is released from the balloon through the pull up cap and under the CD. The air creates a little pocket of higher pressure air and causes the CD to float across the flat surface. I think everyone in the club enjoyed the project I did. I am thinking that this will be my project for Demonstration Day in April.