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# Trial and Improvement

### Four Colours

### The Brown Family

### The Tall Tower

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Simply 'having a go' is a great way to make a start on a problem. When you do have a go, if it works out well that's fine, but what happens if it doesn't work out so well? Do you start again from scratch or is there a way to use what you've already done to help? Have a go at these tasks which might be solved using this 'trial and improvement' way of working.

Age 5 to 11

Challenge Level

Kate has eight multilink cubes. She has two red ones, two yellow, two green and two blue. She wants to fit them together to make a cube so that each colour shows on each face just once.

Age 5 to 7

Challenge Level

Use the information about Sally and her brother to find out how many children there are in the Brown family.

Age 5 to 7

Challenge Level

As you come down the ladders of the Tall Tower you collect useful spells. Which way should you go to collect the most spells?