An investigation looking at doing and undoing mathematical operations focusing on doubling, halving, adding and subtracting.
Here are some arrangements of circles. How many circles would I need to make the next size up for each? Can you create your own arrangement and investigate the number of circles it needs?
In these addition games, you'll need to think strategically to get closest to the target.
Are these statements relating to odd and even numbers always true, sometimes true or never true?
Use the interactivities to fill in these Carroll diagrams. How do you know where to place the numbers?
Ben has five coins in his pocket. How much money might he have?
Four bags contain a large number of 1s, 3s, 5s and 7s. Can you pick any ten numbers from the bags so that their total is 37?
