The glove finger will remain inside the balloon ... make your puffer fish look more realistic. This step allows kids to use ...

trying to make their water rockets travel the farthest. Harnessing air resistance with parachutes. videoHarnessing air resistance with parachutes Children from Links Primary School in London ...

Although these early crude balloons were a far cry from today's high-tech contraptions, the science of ballooning ... consists of a hydrogen balloon and a hot air balloon tied together.