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### Number and algebra

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### Advanced mathematics

# From Playing to Explaining

### 100 Square Jigsaw

### Times of Day

### I Like ...

### First Connect Three

### Calendar Sorting

### Cubies

### Treasure Hunt

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We hope you will enjoy playing with the problems in this feature. Take time to explore and think deeply about the mathematical ideas. Whether it's the start of your academic year or the beginning of a holiday, we hope there is something to inspire you.

Age 5 to 7

Challenge Level

Can you complete this jigsaw of the 100 square?

Age 5 to 7

Challenge Level

These pictures show some different activities that you may get up to during a day. What order would you do them in?

Age 5 to 7

Challenge Level

Mr Gilderdale is playing a game with his class. What rule might he have chosen? How would you test your idea?

Age 7 to 11

Challenge Level

Add or subtract the two numbers on the spinners and try to complete a row of three. Are there some numbers that are good to aim for?

Age 7 to 11

Challenge Level

The pages of my calendar have got mixed up. Can you sort them out?

Age 7 to 11

Challenge Level

The scientists need your help to work out how many Cubies live on a small island! Use the cards to gather all the information you need.

Age 7 to 14

Challenge Level

Can you find a reliable strategy for choosing coordinates that will locate the treasure in the minimum number of guesses?