Chapter 7 — Measurement
We measure things when we want to know how long, how tall, how heavy or how much something can hold. Measurement helps us compare objects and understand the world around us.
In this chapter, you will learn how to compare length, height, weight and capacity. You will also learn how measurement can help you make simple comparisons and decisions in everyday situations.
Why This Chapter Matters
Measurement is part of everyday life. We compare the length of objects, notice which things are taller or shorter, decide which object is heavier or lighter and compare how much different containers can hold.
Comparing objects helps us understand their different measurements.
Learning these ideas prepares you for using standard units and more detailed measurement in later mathematics.
What You Will Learn
- What measurement means.
- How to compare the length of objects.
- How to compare the height of objects.
- How to compare the weight of objects.
- How to compare the capacity of containers.
- How to use measurement ideas in daily life.
Before You Begin
Before starting this chapter, you should be comfortable comparing objects and understanding simple words such as more, less, bigger, smaller, near and far.
You will use these ideas to compare length, height, weight and capacity in different situations.
Understanding the Learning Sequence
The lessons move from understanding what measurement means to comparing different properties of objects and finally using measurement ideas in everyday situations.
This sequence helps you understand one measurement idea at a time before using them together in everyday situations.
Lessons in This Chapter
Complete the lessons in the order shown below.
Important Ideas
- Measurement helps us describe and compare objects.
- Length tells us how long or short something is.
- Height tells us how tall or short something is.
- Weight tells us whether something is heavy or light.
- Capacity tells us how much a container can hold.
- Objects can be compared by looking carefully at their measurements.
- Measurement is useful in many everyday activities.
Chapter Practice
- Which object is longer: a pencil or a large ruler?
- Which object is taller: a chair or a building?
- Which is heavier: a school bag or a pencil?
- Which container can hold more: a bucket or a small cup?
- Give one example of something you measure in daily life.
- What do we compare when we use the words heavy and light?
- What do we compare when we use the words tall and short?
- What do we compare when we ask how much a container can hold?
Quick Revision
Measurement helps us compare objects. We can compare their length, height, weight and capacity.
We use words such as long, short, tall, heavy, light, more and less to describe and compare measurements in everyday situations.
Continue Learning
Start with Lesson 1 — What Is Measurement? and complete the lessons in sequence.