Can You Imagine Time Machine Tabletop Clock "triangular number" Questions

...triangular pieces. The 3 sides of each triangle are different in colour, and each side has a number printed at its edge. These numbers run from 1 to 10. Players try, by matching colour and number, or ...

...triangular prism on the top so you will need enough poles of even length to make the base and top bit of the cube and then even lengths of poles to make the upright sides of your cube. There should ...