# Teaching for mastery in primary maths

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## Exploring weight (or mass)

• Year group: Year 2
• Term: Summer
• Topic: Length, weight and volume
• Duration: 1 weeks
• Keystage: KS1
• Age Range: 6 to 7 yrs
• Unit can be taught out of sequence: Y
• Week Range: 8

In this chapter, pupils measure weight (or mass) in grams (g) and kilograms (kg).

Pupils build on previous learning by using standard equipment and units to measure weight (or mass). They use the standard measurements of grams (g) and kilograms (kg) and measure to the nearest unit. They choose the most appropriate unit to estimate and measure a given weight (or mass).

As before, pupils use common language such as “heavier than” and “lighter than” to compare the weight (or mass) of particular objects. They also put the weight of several objects in order, including those that are not physically in the classroom (eg, in comparing a pillow and an elephant).

Continuing on from their work on comparing lengths in the previous chapter, pupils use the symbols < , > and = to form comparison statements (eg, 1kg > 1g). This also reinforces work on place value and ordering.

## Resources for this topic

### White Rose Maths

#### Reasoning - Problem Solving - Number (KS1) & Fractions and Percentages (KS2) - March 15th

There are two problems for KS1 and three for KS2.

In KS1 children have to work out what prizes can be claimed for a certain number of tokens. They then have to use reasoning to work out the value of a particular object.

At KS2 children solve problems using fractions and percentages. Q3 requires a little more thought and children may benefit from using a bar model or other diagram to help them solve it.

Every day in March the White Rose Maths Hub is aiming to put out a question of the day.

Tweet us @WRMathsHub a picture of your children's answers for a chance to win a prize.

#### Weight

A year 2 resource for weight.

### Mathematics Mastery

#### Exploring weight and mass

Mathematical discussion is a key element of the Mathematics Mastery programme.

Talk Tasks are a brilliant way of enabling pupils to develop their mathematical language, thinking, understanding and confidence.

This activity explores the concept of weight and mass.

• Talk tasks are best completed in mixed attainment pairs, with pupils taking turns to listen and construct arguments
• Emphasis is on discussion rather than the solution, encouraging pupils to use key language and talk in full sentences
• Ask pupils to prove their answers in a variety of ways, using the CPA approach to support mathematical understanding and number sense

Like what you see? Mathematics Mastery is a professional development programme for teachers with a mission to transform mathematics education in the UK.

This task is just a taster of the complete classroom resources we offer. We also provide in-depth development training, online CPD, specialist support and assessment tools.

We believe all elements of our programme are vital in creating lasting change – enabling every child to enjoy and succeed in mathematics.

Want to find out more? Check out our free resources and blogs or join an information session.

#### Exploring weight and mass

Mathematical discussion is a key element of the Mathematics Mastery programme.

Talk Tasks are a brilliant way of enabling pupils to develop their mathematical language, thinking, understanding and confidence.

This activity explores the concept of weight and mass

• Talk tasks are best completed in mixed attainment pairs, with pupils taking turns to listen and construct arguments
• Emphasis is on discussion rather than the solution, encouraging pupils to use key language and talk in full sentences
• Ask pupils to prove their answers in a variety of ways, using the CPA approach to support mathematical understanding and number sense

Like what you see?

Mathematics Mastery is a professional development programme for teachers with a mission to transform mathematics education in the UK.

This task is just a taster of the complete classroom resources we offer. We also provide in-depth development training, online CPD, specialist support and assessment tools.

We believe all elements of our programme are vital in creating lasting change – enabling every child to enjoy and succeed in mathematics.

Want to find out more? Check out our free resources and blogs or join an information session.

### Resources shared by teachers

#### Weighing - A fishy PowerPoint

A animated PowerPoint to use as an introduction to weighing. There are opportunities to discuss various non-standard measures of weight, the importance of consistency and the mathematical language used to describe differences in weight. The PowerPoint also highlights the fact that the biggest things aren't always the heaviest :-)

#### problem solving activity involving weight

Differentiated success criteria and problem which is to add the weight of different animals. Each group will focus on making a different total and how many different ways they can do this.

#### Comparing weights

Estimate which item pictured on this worksheet is bigger, then test it to see if you're right.