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Watch our videos of multiplication methods that you may not have met before. Can you make sense of them?
Think of a number and follow my instructions. Tell me your answer, and I'll tell you what you started with! Can you explain how I know?
Imagine we have four bags containing a large number of 1s, 4s, 7s and 10s. What numbers can we make?
This interactivity invites you to make conjectures and explore probabilities of outcomes related to two independent events.
How many moves does it take to swap over some red and blue frogs? Do you have a method?
What happens when you add a three digit number to its reverse?
Crosses can be drawn on number grids of various sizes. What do you notice when you add opposite ends?
Can all unit fractions be written as the sum of two unit fractions?
If you have only 40 metres of fencing available, what is the maximum area of land you can fence off?
A country has decided to have just two different coins, 3z and 5z coins. Which totals can be made? Is there a largest total that cannot be made? How do you know?
There are lots of ideas to explore in these sequences of ordered fractions.
Play around with the Fibonacci sequence and discover some surprising results!
Can you work out what step size to take to ensure you visit all the dots on the circle?
Can you describe this route to infinity? Where will the arrows take you next?
Here is a machine with four coloured lights. Can you develop a strategy to work out the rules controlling each light?
Players take it in turns to choose a dot on the grid. The winner is the first to have four dots that can be joined to form a rhombus.