Conjecturing and generalising

There are 343 NRICH Mathematical resources connected to Conjecturing and generalising
What numbers can we make now?
problem

What numbers can we make now?

Age
11 to 14
Challenge level
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Imagine we have four bags containing numbers from a sequence. What numbers can we make now?
More Less is More
problem

More Less is More

Age
7 to 14
Challenge level
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In each of these games, you will need a little bit of luck, and your knowledge of place value to develop a winning strategy.
Counting Stick Conjectures
problem

Counting Stick Conjectures

Age
5 to 11
Challenge level
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How many rectangles can you see? Are they all the same size? Can you predict how many rectangles there will be in counting sticks of different lengths?
Diagonally Square
problem

Diagonally Square

Age
7 to 11
Challenge level
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Ayah conjectures that the diagonals of a square meet at right angles. Do you agree? How could you find out?
Why dialogue matters in primary proof
article

Why dialogue matters in primary proof

In this article for Primary teachers, Ems explores three essential features of proof, all of which can be developed in the context of primary mathematics through talk.
What does it all add up to?
problem

What does it all add up to?

Age
11 to 18
Challenge level
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If you take four consecutive numbers and add them together, the answer will always be even. What else do you notice?
Three neighbours
problem

Three neighbours

Age
7 to 14
Challenge level
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Take three consecutive numbers and add them together. What do you notice?
Guess What?
problem

Guess What?

Age
7 to 11
Challenge level
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Can you find out which 3D shape your partner has chosen before they work out your shape?
Charitable Pennies
problem

Charitable Pennies

Age
7 to 14
Challenge level
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Investigate the different ways that fifteen schools could have given money in a charity fundraiser.