Being collaborative

There are 308 NRICH Mathematical resources connected to Being collaborative

problem

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Twenty divided into six

Age

7 to 11

Challenge level

Katie had a pack of 20 cards numbered from 1 to 20. She arranged the cards into 6 unequal piles where each pile added to the same total. What was the total and how could this be done?

problem

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Sealed solution

Age

7 to 11

Challenge level

Ten cards are put into five envelopes so that there are two cards in each envelope. The sum of the numbers inside it is written on each envelope. What numbers could be inside the envelopes?

problem

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Cut nets

Age

7 to 11

Challenge level

Each of the nets of nine solid shapes has been cut into two pieces. Can you see which pieces go together?

problem

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Stringy quads

Age

7 to 11

Challenge level

This practical problem challenges you to make quadrilaterals with a loop of string. You'll need some friends to help!

problem

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Factors and multiples puzzle

Age

11 to 14

Challenge level

Using your knowledge of the properties of numbers, can you fill all the squares on the board?

problem

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Thousands and millions

Age

11 to 14

Challenge level

Here's a chance to work with large numbers...

problem

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Sticky numbers

Age

11 to 14

Challenge level

Can you arrange the numbers 1 to 17 in a row so that each adjacent pair adds up to a square number?

problem

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Fraction match

Age

5 to 11

Challenge level

A task which depends on members of the group noticing the needs of others and responding.

problem

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Stick images

Age

7 to 14

Challenge level

This task requires learners to explain and help others, asking and answering questions.

problem

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What does random look like?

Age

11 to 14

Challenge level

Engage in a little mathematical detective work to see if you can spot the fakes.