The numbers 2 were used to generate it with just one number used twice. Age 5 to 7 Trial and Improvement at KS1 These lower primary tasks could all be tackled using a trial and improvement approach. An investigation involving adding and subtracting sets of consecutive numbers. Investigate the total number of sweets received by people sitting in different positions. Prison Cells Age 7 to 11 Challenge Level: On a digital clock showing 24 hour time, over a whole day, how many times does a 5 appear? In particular, it explains what we mean by ‘problem-solving skills’ and aims to give further guidance on how we can help learners to develop these skills by highlighting relevant NRICH tasks.

How did this work? Arrange the four number cards on the grid, according to the rules, to make a diagonal, vertical or horizontal line. Working on the problem Stage 3: If you know the numbers that come out, what multiplication might be going on in the box? 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. She arranged the cards into 6 unequal piles where each pile added to the same total. How about the shaded numbers in the other squares?

Tea Cups Age 7 to 14 Challenge Level: Tasks for KS1 children which focus on working systematically. Four bags contain a large number of 1s, 3s, 5s and 7s.

# Problem Solving and Mastery Ideas | Manadon Vale Primary School

Can you make a cycle of pairs that add to make a square number using all the numbers in the box below, once and once only? Make Age 7 to 11 Challenge Level: Finding Fifteen Age 7 to 11 Challenge Level: Roll two red dice and a green dice.

She gave the clown six coins to pay for it. Multiplication and Division KS2. Age 7 to 11 Working Backwards at KS2 The hrich primary tasks in this collection could each be solved by working backwards.

Curious Number Age 7 to 11 Challenge Level: Amy’s Dominoes Age 7 to 11 Challenge Level: Table Patterns Go Wild! Every card he ks22 had the same value as the one he had just finished spelling. This group activity will encourage you to share calculation strategies and to think about which strategy might be the most efficient.

You could try for different numbers and different rules. Can you find some more abundant numbers? What do you notice about the pink numbers? Read Lynne’s article which discusses the place of problem solving in the new curriculum and sets the scene.

The upper primary tasks in this collection could each be solved by working backwards. On a digital clock showing 24 hour time, over a whole day, how many times does a 5 appear?

Square Subtraction Age 7 to 11 Challenge Level: Working Systematically at KS2. What was the total and how could this be done? Can you sort out the clues and find the number?

The great planetary explorer Nico counted 52 legs. Can you find out where all the numbers have got to from these ten statements? Three Neighbours Age 7 to 11 Challenge Level: Age probldm to 7 Conjecturing and Generalising at KS1 The tasks in this collection encourage lower primary children to conjecture and generalise. Can you make square numbers by adding two prime numbers together?

How many blocks would be needed to build an up-and-down staircase with 5 steps up and 5 steps down? Prison Cells Age 7 to 11 Challenge Level: This dice train has been made using specific rules.

## Problem Solving

Strike it Out Age 5 to 11 Challenge Level: There is a clock-face where the numbers have become all mixed up. Can you get four in a row? Half Time Age 5 to 11 Challenge Level: