# NRICH PROBLEM SOLVING KS1

Exploring characteristics of everyday objects and shapes and describing them. Compare the Cups live Age 5 to 7 Challenge Level: You can put more than one weight on a hook. Are You Well Balanced? Doubling Fives live Age 5 to 7 Challenge Level: Number Detective Age 5 to 11 Challenge Level: What could the half time scores have been in these Olympic hockey matches?

These lower primary tasks could all be tackled using a trial and improvement approach. Pairs of Legs Age 5 to 7 Challenge Level: Try some throwing activities and see whether you can throw something as far as the Olympic hammer or discus throwers. Kimie and Sebastian were making sticks from interlocking cubes and lining them up. In how many different ways can they build their houses?

Can you place these quantities in order from smallest to largest? Dicey Addition Kks1 5 to 11 Challenge Level: Times of Day Age 5 to 7 Challenge Level: Weighted Numbers Age 5 to 7 Challenge Level: How many possible necklaces can you find?

Kimie and Sebastian were making sticks from interlocking cubes and lining them up. Sweets are given out to party-goers in a particular way.

## The Puzzling Sweet Shop

Timing Age 3 to 5 Counting and comparing numbers. There are three versions of this challenge. Beads and Bags Age 5 to 11 Challenge Level: Altogether there were 8 heads and 22 feet. Find the Difference Age 5 to 7 Challenge Level: Counting in ones and twos.

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There were chews for 2p, mini eggs for 3p, Chocko bars for 5p and lollypops for 7p in the sweet shop. Can you use the information given to find out how many eggs are in each basket? Use your addition and subtraction skills, combined with some strategic thinking, to beat your partner at this game.

Age 5 to 7 Challenge Level: Age 5 to 7 Challenge Level: Growing Garlic Age 5 to 7 Challenge Level: Always, Sometimes or Never?

# Problem-solving Skills :

Lee was writing all the counting numbers from 1 to My coat has three buttons. Is problem solving at the heart of your curriculum? Can you use the information to find out when Kate was born? Age 5 to 7 Reasoning and Convincing at KS1 The tasks in this collection can be used to encourage children to convince others of their reasoning, using ‘because’ nrifh.

How many legs do each of these creatures have?

Can you explain why? Maisy Goes Camping Age 3 to 5 Using everyday language to talk about addition and subtraction.

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Can you discover Buzzy’s pattern and fill in the empty cells for her? What numbers can be made with six beads? Exploring characteristics of everyday objects and shapes and describing them. Number Rhymes Age 3 to 5 Counting down from 10 solvinf up to 10 Saying how many there are altogether.

## Problem Solving and Mastery Ideas

Number Talks Age 3 to 5 Recognising, creating and describing patterns with numbers. Can you use the information given to find out how many eggs are in each basket?

Are You Well Balanced? What happens when you add pairs of the numbers together? Age 5 to 7 Conjecturing and Generalising at KS1 The tasks in this collection encourage lower primary children to conjecture and generalise.