The wobbler is self-righting because its centre of mass is very low. As the wobbler leans over, its centre of mass rises but...

At home 5-11 11-14

For something to balance, its centre of mass has to be above its point of support. Water can flow which means that as the can...

At home 5-11 11-14

It's much easier to balance it the second way. The stick rotates slower when the clay is at the top, so there's more time to...

At home 5-11 11-14

Your stack seems to defy gravity! You have to shift the blocks by tiny amounts towards the end, so it’s extremely difficult to...

At home 5-11 11-14