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'Thirsty?' printed from

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This problem has been designed to work on in a group of about four. For more details about how you might go about doing this, please read the Teachers' Notes.

You will need to print off these eight cards, which have pictures of glasses of orange and blackcurrant juice on them. You need one set of these cards for your group.

Have a good look at the cards with everyone in your group. Talk to each other about what you notice. Can you sort the cards in different ways?

Now you are ready for the challenge. You will need to print off this set of clue cards. There are ten clue cards altogether.

Give the clue cards out to everyone in your group. Take it in turns to read your cards out loud. Listen out for instructions that tell you what to do, which are written on one or more of the cards.

Can you lay out the pictures of the drinks in the way described by the clue cards?

We would love to hear how you got on with this activity.
Perhaps you can send us a photo of your solution?
Can you tell us which clue cards helped you get started?
How did you know whether your solution was correct?

This activity is taken from Maths Buzz, collaborative reasoning challenges devised by NRICH and published by BEAM. Maths Buzz is available from the BEAM website:,34,&prod_id=336