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### Number and algebra

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# Being Resilient - Upper Primary Number

### Plants

### Shape Times Shape

### The Deca Tree

### Maze 100

### The Dice Train

### Spiralling Decimals

### Factor Lines

### More Children and Plants

### Factors and Multiples Game

### Two and TwoLive

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Age 5 to 14

Challenge Level

Three children are going to buy some plants for their birthdays. They will plant them within circular paths. How could they do this?

Age 7 to 11

Challenge Level

These eleven shapes each stand for a different number. Can you use the number sentences to work out what they are?

Age 7 to 11

Challenge Level

Find out what a Deca Tree is and then work out how many leaves there will be after the woodcutter has cut off a trunk, a branch, a twig and a leaf.

Age 7 to 11

Challenge Level

Can you go through this maze so that the numbers you pass add to exactly 100?

Age 7 to 11

Challenge Level

This dice train has been made using specific rules. How many different trains can you make?

Age 7 to 14

Challenge Level

Take turns to place a decimal number on the spiral. Can you get three consecutive numbers?

Age 7 to 14

Challenge Level

Arrange the four number cards on the grid, according to the rules, to make a diagonal, vertical or horizontal line.

Age 7 to 14

Challenge Level

This challenge extends the Plants investigation so now four or more children are involved.

Age 7 to 16

Challenge Level

A game in which players take it in turns to choose a number. Can you block your opponent?

Age 7 to 16

Challenge Level

How many solutions can you find to this sum? Each of the different letters stands for a different number.