Register for our mailing list. Is this a coincidence? More mathematics of yesteryear. Can you put the numbers 1 to 8 into the circles so that the four calculations are correct? How many times do they flash together during a whole minute?

Can you work out what is on each face and the route it has taken? The idea of this game is to add or subtract the two numbers on the dice and cover the result on the grid, trying to get a line of three. Roasting Old Chestnuts 3 Age 11 to 16 Mainly for teachers. To support this aim, members of the NRICH team work in a wide range of capacities, including providing professional development for teachers wishing to embed rich mathematical tasks into everyday classroom practice. These spinners will give you the tens and unit digits of a number. What could Lolla have paid for the balloon? Which numbers of bears can they share so that there are none left over?

Find a great variety of ways of asking questions which make 8. Think Plan Communicate Mathematically Age 5 to Four Go game for an diviwion and child.

Add powers of 3 and powers of 7 and get multiples of Lolla bought a balloon at the circus.

# Numbers and the Number System :: Divisibility :

On a digital clock showing 24 hour time, over a whole day, how many ngich does a 5 appear? The numbers 1 – 9 may be used once and once only. How might you show them in a picture, with things, with numbers and symbols? To support this aim, members of the NRICH team work in a wide range of capacities, including providing professional development for teachers wishing to embed rich mathematical tasks into everyday classroom practice.

# Working Systematically at KS2 :

Age 5 to Can you get close to than your partner? Use an Excel to investigate division.

Keep adding as few pebbles as necessary to double the area. Square Subtraction Age 7 to 11 Challenge Level: Use your skills of addition, subtraction, multiplication and division to blast the asteroids. Is there an efficient way to work out how many factors a large number has?

Can you work out the arrangement of the digits in the square so that the given products are correct? If you know the numbers that come out, what multiplication might be going on in the box? Look Again Age 11 to 18 Think you know what’s going on? Dicey Operations for an adult and child. Is it the same number for a 12 hour clock over a whole day?

How efficient can you be? This task depends on learners sharing reasoning, listening to opinions, reflecting and pulling ideas together. Clapping Times Age 5 to 7 Challenge Level: Mystery Matrix Age 7 to 11 Challenge Level: Can you work out the table and the shift each ,s2 Fac-finding Age 14 to 16 Challenge Level: Is there only one solution in each case?

This article looks at how images, concrete apparatus and representations can help students develop deeper understandings of abstract mathematical ideas. What happens if you make a sequence adding 2 each time?

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Target Decimal Age 11 to 16 Challenge Level: Select several values for M and try to establish what the flow chart does. Factor-multiple Chains Age 7 to 11 Challenge Level: Nearly all of us have made table patterns on hundred squares, that is 10 by 10 grids. Can you sort out the clues and find the number?