Number Balance Age 5 to 7 Challenge Level: Is problem solving at the heart of your curriculum? Which comes next in each pattern of dominoes? There are also nine houses, three of each colour. How many sculls could I have?

Here are some arrangements of circles. Can you find out their scores? To support this aim, members of the NRICH team work in a wide range of capacities, including providing professional development for teachers wishing to embed rich mathematical tasks into everyday classroom practice. Tasks for KS1 children which focus on working systematically. Find the Difference Age 5 to 7 Challenge Level:

What numbers of total spots can you make?

There are three versions of this challenge. Robot Monsters Age 5 to 7 Challenge Level: Birthday Sharing Age 5 to 7 Challenge Level: The tasks in this collection encourage upper primary children to conjecture and generalise. What’s the smartest way to do it?

How would you find out how many football cards Catrina has collected? Doing and Undoing Age 5 to 11 Challenge Level: Can you use the information given to find out how many eggs are in each basket? These upper primary tasks could all be tackled using a trial and improvement approach.

Growing Garlic Age 5 to 7 Challenge Level: Nrcih and Ben are playing a game with a calculator. Maisy Goes Camping Age 3 to 5 Using everyday language to talk about addition and subtraction.

Annie and Ben are playing a game with a calculator. Can you work out how to win this game of Nim?

# Working Backwards at KS1 :

Complete the number patterns. Sell ks1 solves problem maths ke1 profit. In the second article, Jennie offers you practical ways to investigate aspects of your classroom culture and in the third article, she splving three ways in which we can support children in becoming competent problem solvers.

Create a pattern on the left-hand grid. Daisy and Akram were making number patterns. This problem challenges you to find out how many odd numbers there are between pairs of numbers.

Now try with a stick of 8 cubes and a stick of 6 cubes. How many trains can you make which are the same length as Matt’s, using rods that are identical?

Can you do it in fewer throws of the dice? It’s Sahila’s birthday and she is having a party. peoblem

The lower primary tasks in this collection could each be solved by working backwards. How Odd Age 5 to 7 Challenge Level: Order nrich, addition and subtraction of decimals, solve word ks1 involving maths.

## Multiplication and Division KS1

Investigate the total number of sweets received by people sitting in different positions. Use the number weights to find different ways of balancing the equaliser.

These caterpillars have 16 parts. Sllving Steps to 50 Age 5 to 7 Challenge Level: The idea is to change the colour of all the spots on the grid.

Hidden Jewels Age 3 to 5 Saying how many there are without counting. Use solvin to solve the maths. Work out the weight of each colour Wangdoodle. Age 5 to 7 Challenge Level: