The old baking soda and vinegar trick is fun for pre-schoolers. Needed-large
balloon and a glass coke bottle, (or something similar) Put the vinegar in
the jar, about 3/4. Put the baking soda in the balloon. PUt the mouth of the
balloon over the jar, empty baking soda into bottle. The balloon should inflate.
Also, use plastic bread bags as wind socks. Make paper pinwheels. Janet