Mass Teaching Resources
Teach students how to measure mass or calculate the mass of an object and more with games, worksheets and more teacher-created resources for your classroom!
Aligned with Australian maths standards, each printable and digital teacher resource in this collection has undergone careful review by our maths teachers to ensure it's ready to be added to a mass lesson plan.
Is this your first year teaching kids how to find the mass of an obect? Or maybe you're just looking for fresh ways to engage your students on the topic? Read on for a primer from our teacher team, including a kid-friendly definition of mass in physics, the formula for calculating mass and more!
What Is Mass? A Kid-Friendly Definition
Do you need a mass definition to start your lesson? This physics can be difficult for kids to understand due to its intangible nature. While we can measure the length or width of an object with a ruler, finding mass means dealing with an invisible concept.
So how do you explain it? Here's a definition that our teacher team likes to use to describe mass for our own students:
Mass is a measurement of how much matter an object is made of.
Mass vs. Weight — What's the Difference?
The definition above builds off students' study of matter in science classes and what they've learned about 'heavy' and 'light' objects and the differences between them both.
But as we've already noted, mass can be confusing for kids, and one of the most common points of confusion comes down to weight. After all, if something is heavy, it has more mass than a light object, but it also has more weight.
So, are mass and weight the same thing? No! Let's break down the differences:
Mass |
Weight |
A measurement of the amount of matter in an object | A measurement of the force exerted on an object due to gravity |
Doesn't change even when the amount of gravitational force on the object changes | Changes depending on the amount of gravitational force on the object |
What Is Mass Measured In? A Look at Units of Mass
The most common units for mass are kilograms (abbreviated kg) and grams (abbreviated g).
This represents another difference between calculating the mass of an object and measuring its weight! Weight is typically measured in pounds, ounces and tonnes.
How to Find Mass — 4 Methods
We've covered what mass is and how it's measured. Now it's time to find the mass of different objects!
There are four common methods that can be used to calculate mass, and each one has its own applications. Read on for a breakdown of each one, including a formula that students can use to measure mass.
1. Measuring Mass With a Balance Scale
The simplest way to measure the mass of an object is to use a balance scale. Students can place the object on the scale and read the result.
Pretty simple, huh?
2. Using a Formula to Find Mass
What if the object is too large to place on a scale, or you don't have the object ... or a scale? Using a formula to find the mass of an object is another option in these situations!
There are two mass formulas that are typically used to calculate mass:
Density Formula
If you know the density (mass per unit volume) of a material and the volume of the object, you can use the following formula:
Mass=Density×VolumeMass=Density×Volume
Weight Formula
Although weight and mass are different, here on Earth these two measurements are in proportion to one another. Because of this, you can make use of the weight formula to solve for mass.
Weight=Mass×Acceleration due to GravityWeight=Mass×Acceleration due to Gravity.
Note: This formula only works when the object is in a gravitational field!
3. Measuring Mass With the Water Displacement Method
Do you have an irregularly shaped object? The simplest way to calculate its mass is to use the water displacement method.
- Submerge the object in water.
- Calculate the volume of water displaced. This is equal to the volume of the object.
- Calculate the mass using the density formula mentioned earlier.
4. Using a Spring Scale to Calculate Mass
The final method for finding the mass of an object is to use a spring scale. This is typically a method taught in secondary school.
The spring scale is used to measure the force exerted by an object due to gravity, with students employing Newton's second law to find the mass of a particular object.
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Year 3 Using Units of Measurement Worksheets Bundle
Download year 3 worksheets for using units of measurement that are linked to the Australian Curriculum.
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Measurement Conversion Scoot Game
Grab a handy set of 24 measurement conversion task cards to use as a whole class scoot activity.
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Measuring Mass with Informal Units Worksheet
A worksheet to use when exploring mass and how to measure it with informal units.
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Converting Units of Mass – Worksheet
Convert units of mass including those with decimal representation using this worksheet.
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Reading Scales – Measuring Mass Worksheet
A worksheet for students to use when learning to read scaled instruments to measure mass.
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Mass Vocabulary Poster
A poster that explains the concept of mass and lists associated vocabulary.
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Mass Investigation - How Heavy Are the Objects in Your Classroom?
A mathematics investigation involving mass, embedded in a real-world context.
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How Much Does It Measure? Match-Up Activity (Length, Mass and Capacity)
Reinforce measurement concepts of length, mass and capacity with 18 printable matching cards.
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Selecting Units of Mass – Sorting Activity
A sorting activity to help students identify objects that should be measured in grams, kilograms and tonnes.
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I Have, Who Has? Game – Measuring Mass with Scales
A game to reinforce the skill of reading scaled instruments when measuring mass.
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Which Is Heavier? – Interactive PowerPoint
An interactive PowerPoint quiz that asks students to compare the mass of various everyday objects.
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Which Is Heavier? – Mini Book
A mini book that allows students to compare the mass of various everyday objects.
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Heavy and Light Hands-on Task
A fun hands-on teaching resource that explores indirect comparisons of objects.
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My Recipe Rules - Measurement Worksheet
A worksheet using money and measurement concepts.
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Colossal Cinemas: Which Popcorn Popper? – Project
A project that encourages students to use imperial and customary units to measure popcorn poppers and the popcorn they produce.
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Mass Maths Investigation - How Much Do We Throw Away?
A mathematics investigation about measuring mass, embedded in a real-world context.
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Mass Vs Weight Poster
A poster explaining the difference between mass and weight.
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Reading Scales – Measuring Mass Match-Up Worksheet
A worksheet to give students practice at reading scales to measure mass.
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Know Your Measurements Board Game
A fun measurement game for students to play when applying their knowledge of length, mass, capacity and time.
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Using Units of Measurement Worksheets - Foundation
8 using units of measurement worksheets linked to the Australian Curriculum.
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Weighing Scales Templates
A variety of weighing scales templates for students to practise reading scales to measure grams and kilograms.
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Weighing Scales Templates – Fish Scales
An assortment of weighing scales templates to give students practice at reading scales to measure mass.
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Measuring Mass with Informal Units Unit Plan
This Mathematics unit addresses the concept of measuring, comparing and ordering mass using informal units.
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Assessment - Measuring Mass with Informal Units
A 30 minute assessment in which students will demonstrate their knowledge and understanding of mass.
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Comparing and Ordering Mass
A 60 minute lesson in which students will develop the concept of mass by comparing and ordering the masses of objects.
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Mass Investigation - How Heavy Are the Objects in Your Classroom?
A 60 minute lesson in which students will apply knowledge and understanding of mass to a real-world context.
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Introduction to Mass
A 60 minute lesson in which students will explore the concept of mass by comparing and ordering objects.
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Revision of Mass
A 60 minute lesson in which students will revise and consolidate the concept of mass.
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Using Balance Scales
A 60 minute lesson in which students will create a set of balance scales for measuring and comparing the masses of objects.