### PROBLEM SOLVING DOUBLING AND HALVING KS2

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. Pythagorean Triples I Age 11 to 16 The first of two articles on Pythagorean Triples which asks how many right angled triangles can you find with the lengths of each side exactly a whole number measurement. Question 11 requires students use a mindmap to show their answer. Multiplication and Division Age 5 to 7 These lower primary tasks will help you to think about multiplication and division. For question 10 students should identify that doubling and halving is a useful strategy when both numbers are even — to start with, but this question deserves more discussion, as simply doubling and halving may not necessarily produce a question that is easier to do…. Asks students to solve word problems. Asks students to solve problems using doubling and halving.

Early Years Activities – Number Age 3 to 5. Addition and Subtraction KS1 Age 5 to 7 The lower primary tasks in this collection all focus on adding and subtracting. For question 10 students should identify that doubling and halving is a useful strategy when both numbers are even — to start with, but this question deserves more discussion, as simply doubling and halving may not necessarily produce a question that is easier to do…. Start with 1 x n, and double and halve from there. Double Trouble Age 3 to 5 Doubling numbers. Addition and Subtraction Age 5 to 7 These lower primary tasks all involve addition, subtraction or both.

Bits of Things Age 5 to 7 What happens when you split an object or a few objects into different piles?

Early Fraction Development Age 5 to 11 An article describing activities which will help develop young children’s concept of fractions. Try these activities to find out!

# Doubling and halving | nzmaths

These are all straightforward and can use the doubling and halving strategy. Fractions Age 5 to 7 The activities in this feature give you chance to explore fractions. However, it does require some idea of prime numbers and how these operate. A simple visual exploration into halving and doubling.

Use the resource finder. They may need to be taught what a mind map is and what it looks like. In these activities, you can practise your skills with adding ssolving taking away.

# Maths Search :

Doubling and halving to find factors Doubling and halving tripling and thirding etc is a very useful strategy for finding a full set of factors. Asks students to solve problems using doubling and halving. Try adding fractions using A4 paper. More Proboem Primary Fractions Age 5 to 7. Multiplying and Dividing Age 5 to 7 Try these problems, which are all about multiplying and dividing different numbers. This article for teachers looks at how teachers can use problems from the NRICH site to help them teach division.

Good discussion is warranted as a follow-up. The final question have 2 unknowns — and the instruction halviing that they involve doubling and halving. Fractions Age 5 to 7 Silving these lower primary tasks if you want to improve your understanding of fractions.

## 66 Matches for doubling halving

Geoboards Age 5 to 7 This lower primary feature brings together activities which make use of geoboards. You could investigate your own starting shape. Double Trouble Age 3 to 5 Doubling numbers.

Baskets Age 3 to 5 Counting reliably Solving problems, including doubling, halving and sharing. These pictures were made by starting with a square, finding the half-way point on each side and joining those points up.

What happens when you split an object or a few objects into different piles? As students should already be at stage 6 before they attempt such an exercise, this should not cause problems for students, though work with large numbers should be forming part of the teaching. Working Backwards at KS1 Age 5 to 7 The lower primary tasks in this collection could each be solved by working backwards.

This could prove tricky for some students. A TKI account lets you personalise your experience – enabling you to save custom homepage layouts, create kete, and save bookmarks and searches. You’ll find money, length and time here.

## Doubling and halving

However, the concept of proof and the power of algebra can be followed up in discussions. How do you know they are halves?

Shaping It Age 5 to 11 Challenge Level: This activity focuses on doubling multiples of five. Doublling answers to question 10 suggests that students check their answers with others in their group, and explain why they think certain problems are easier or not easier using tripling and thirding etc.

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Students who do not read this instruction could find they cannot do them, unless they assume that they have been doubled and halved.