General Products

The classic brass Ball & Ring apparatus to prove and demonstrate the effects of heating a metal.

If the ring is chilled in ice, the ball cannot pass through the ring. If the ball is heated, it cannot pass through the ring. A chain joins the ball to the ring so they cannot become separated.

The IEC item is carefully machined and matched for size so that the experiment works.

Class participation lesson

Makes learning fun

Catch the ball --- answer the question under your left thumb

Teachers guide/answers included

Suitable for year levels  7 8 9