Measurement

Measure, estimate, order and compare objects

Measure mass of objects

Order and compare objects by mass

Convert between units of mass (mg,g)

Convert between units of mass (g, kg)

Convert between units of mass (kg, tonnes)

Units of Mass (and conversions)

Imperial Units - Weight

Volume and Capacity

Measure length of objects

Estimate the lengths of objects (cm, m)

Estimate the lengths of objects (mm, cm, m, km)

Order objects by length

Order and compare objects by length, including conversion

Choose the most appropriate unit of length for measuring objects (mm, cm, m, km)

Units of Length (and conversions)

Convert between different units of lengths

Problems with Lengths

Shapes and fractions - perimeter

Imperial Units -Length

Distance problems

Shapes and fractions - area

Areas of Regular and Irregular Shapes

Comparisons using area

Introduction to Area

Appropriate area units

Area of Rectangles and Squares

Decompose a shape into rectangles to find the area

Area of Rectangles and Distributive Property

Problems with Areas

Area of triangles

Area of Parallelograms

Shape Toss (Investigation)

Connecting Perimeters and Areas

Paper Planes, Areas and Perimeters (Investigation)

Measure and estimate capacity of objects

Estimate capacity

Order objects by capacity

Units of capacity (and conversions)

Imperial Units - Capacity

Comparisons using volume

Marshmallow Challenge (Investigation)

Introduction to Imperial Units

Measure, estimate, order and compare temperature

United Kingdom United Kingdom

Primary

Order and compare objects by mass

Lesson

What is mass?

When we think about how heavy something is, we are thinking about its mass. We use units of measurement to describe the mass of objects, such as:

milligrams
grams, and
kilograms.

When we need to follow a recipe, kitchen scales help us weigh ingredients. We can stand on a set of scales to find our weight in kilograms.

Remember!

To put objects in order by mass, we need to make sure we are using the same unit of measurement, such as grams, for each object we are comparing.

We could weigh each object in a group to put them in order but we could also use balance scales. We can work out which object is heavier or lighter out of two objects, then compare it to another object.

In the video, we'll use the mass to compare objects, as well as balance scales.

Worked examples

question 1

We want to order these animals from $heaviest$ to $lightest$ .


Cockatoo	Sparrow	Pigeon

Which of these animals is the $heaviest$ ?
$Sparrow$
A
$Cockatoo$
B
Pigeon
C
Which of these animals is the second $heaviest$ ?
$Sparrow$
A
$Cockatoo$
B
Pigeon
C
Which of these animals is the $lightest$ ?
$Sparrow$
A
Pigeon
B
$Cockatoo$
C

Question 2

We want to order these animals according to their mass from $heaviest$ to $lightest$ .

Which of these animals is $heavier$ ? (The pigeon is on the left.)

$cockatoo$
A
$pigeon$
B
Which of these animals is $heavier$ ? (The sparrow is on the left.)

$sparrow$
A
$pigeon$
B
The animals weights in $decreasing$ order is:
$sparrow$ , $pigeon$ , $cockatoo$
A
$cockatoo$ , $pigeon$ , $sparrow$
B
$sparrow$ , $cockatoo$ , $pigeon$
C
$cockatoo$ , $sparrow$ , $pigeon$
D

Question 3

A $pelican$ weighs $12$12 kg, a $turkey$ weighs $35$35 kg, a $chicken$ weighs $3$3 kg and $an ostrich$ weighs $111$111 kg.

Choose the list that puts these $birds$ in order from lightest to heaviest.
$chicken$ , $turkey$ , $ostrich$ , $pelican$
A
$chicken$ , $pelican$ , $turkey$ , $ostrich$
B
$turkey$ , $pelican$ , $chicken$ , $ostrich$
C
$ostrich$ , $turkey$ , $pelican$ , $chicken$
D

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