Being collaborative

There are 308 NRICH Mathematical resources connected to Being collaborative

problem

Favourite

Reaction timer

Age

11 to 14

Challenge level

This problem offers you two ways to test reactions - use them to investigate your ideas about speeds of reaction.

problem

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Coded hundred square

Age

7 to 11

Challenge level

This 100 square jigsaw is written in code. It starts with 1 and ends with 100. Can you build it up?

problem

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Number 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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Inky cube

Age

7 to 14

Challenge level

This cube has ink on each face which leaves marks on paper as it is rolled. Can you work out what is on each face and the route it has taken?

game

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Countdown

Here is a chance to play a version of the classic Countdown Game.

problem

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6 beads

Age

5 to 7

Challenge level

If you put three beads onto a tens/ones abacus you can make the numbers 3, 30, 12 or 21. What numbers can be made with six beads?

problem

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Dozens

Age

7 to 14

Challenge level

Can you select the missing digit(s) to find the largest multiple?

problem

Favourite

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

Favourite

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

Favourite

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?

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For younger learners

Being collaborative

Reaction timer

Coded hundred square

Number match

Inky cube

Countdown

6 beads

Dozens

Twenty divided into six

Sealed solution

Cut nets