Use the information to describe these marbles. What colours must be
on marbles that sparkle when rolling but are dark inside?
This investigates one particular property of number by looking closely at an example of adding two odd numbers together.
This ladybird is taking a walk round a triangle. Can you see how much he has turned when he gets back to where he started?
If you are stuck, try looking at your model in different ways to see if that helps.
Think about what you know about the properties of odd and even numbers.