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### Number and algebra

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# Your Solutions

### Eightness of Eight

### If the World Were a Village

### Seeing Parallelograms

### Open Boxes

### Seeing Rhombuses

### Two Clocks

### Dice in a Corner

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Take a look at these recently solved problems.

Age 5 to 7

Challenge Level

What do you see as you watch this video? Can you create a similar video for the number 12?

Age 5 to 11

Challenge Level

This activity is based on data in the book 'If the World Were a Village'. How will you represent your chosen data for maximum effect?

Age 7 to 11

Challenge Level

Players take it in turns to choose a dot on the grid. The winner is the first to have four dots that can be joined to form a parallelogram.

Age 7 to 11

Challenge Level

Can you work out how many cubes were used to make this open box? What size of open box could you make if you had 112 cubes?

Age 7 to 11

Challenge Level

Players take it in turns to choose a dot on the grid. The winner is the first to have four dots that can be joined to form a rhombus.

Age 7 to 11

Challenge Level

These clocks have only one hand, but can you work out what time they are showing from the information?

Age 7 to 11

Challenge Level

How could you arrange at least two dice in a stack so that the total of the visible spots is 18?