Here are three pairs of rods:

The ratio of each of these pairs is 3 : 2.

Can you use the interactivity below to show that this is true?

What is the ratio of the pair below? Again, you could use the interactivity to show your thinking.

Here is another pair of rods:

Can you use the interactivity to find other pairs of single rods with the same ratio as the yellow to the pink?

Again, using only pairs of single rods what pairs can you find with the same ratio as those below?

Using only pairs of single rods what pairs can you find with the ratio 9 : 6?