Mathematics · Primary 2

Active learning ideas

Measuring Volume in Litres

Active learning helps young students grasp volume by connecting abstract numbers to concrete actions. Measuring liquids through pouring, comparing, and reading scales builds both conceptual understanding and practical skills they will use in daily life.

• MOE Syllabus Outcomes
• MOE: Measurement and Geometry - P2
• MOE: Volume - P2

• 20–35 min
• Pairs → Whole Class
• 4 activities

Activity 01

• Experiential Learning
• 25 min · Pairs

Pairs: Pour and Read Relay

Pair students with a measuring jug, 1-litre bottle, and smaller cups. One student pours water into the jug while the partner reads the scale aloud. Switch roles after three pours, then compare readings for accuracy. End with pairs estimating before pouring.

How do we read the scale on a measuring jug to find the volume of a liquid?

Facilitation Tip

During the Pour and Read Relay, position measuring jugs on tables where students can easily see and reach the scales without tilting their heads.

What to look for

Present students with a measuring jug containing a specific volume of water (e.g., 1.5 litres). Ask: 'What is the volume of water in the jug? How do you know?' Observe their ability to read the scale.

• Apply
• Analyze
• Evaluate
• Self-Awareness
• Self-Management
• Social Awareness

Activity 02

• Experiential Learning
• 35 min · Small Groups

Small Groups: Container Comparison Stations

Set up stations with pairs of containers like bottles and jugs of different shapes. Groups pour water from one to the other to see which holds more, recording volumes on charts. Rotate stations and share findings with the class.

How can we compare two containers to find which holds more?

Facilitation Tip

At Container Comparison Stations, provide a variety of containers with clear labels so students can focus on volume rather than guessing shapes.

What to look for

Give each student two different-sized empty containers. Ask them to estimate which holds more, then use a standard litre measure to fill one and pour it into the other. They should draw or write their findings and state which container holds more.

• Apply
• Analyze
• Evaluate
• Self-Awareness
• Self-Management
• Social Awareness

Activity 03

• Experiential Learning
• 30 min · Whole Class

Whole Class: 1 Litre Show and Tell

Collect everyday 1-litre containers like milk cartons and juice boxes. Display them for students to observe and discuss similarities. Have volunteers pour to demonstrate 1 litre on the class jug, noting scale readings.

What does "1 litre" look like in everyday containers?

Facilitation Tip

For the 1 Litre Show and Tell, bring in household items with clear 1-litre markings so students connect the standard unit to familiar objects.

What to look for

Show students two identical containers, one filled with 1 litre of water and the other with 2 litres. Ask: 'What do you observe about the water levels? How can we use a measuring jug to find out exactly how much water is in each?'

• Apply
• Analyze
• Evaluate
• Self-Awareness
• Self-Management
• Social Awareness

Activity 04

• Experiential Learning
• 20 min · Individual

Individual: Scale Matching Game

Provide worksheets with jug images at different volumes. Students draw lines to mark litres or match volumes to scales. Follow with self-checking using real jugs and water.

How do we read the scale on a measuring jug to find the volume of a liquid?

Facilitation Tip

In the Scale Matching Game, use jugs with both whole and half-litre markings so students practice reading fractional volumes.

What to look for

Present students with a measuring jug containing a specific volume of water (e.g., 1.5 litres). Ask: 'What is the volume of water in the jug? How do you know?' Observe their ability to read the scale.

• Apply
• Analyze
• Evaluate
• Self-Awareness
• Self-Management
• Social Awareness

A few notes on teaching this unit

Teach volume measurement by grounding it in real-world tasks, such as cooking or watering plants. Avoid abstract explanations without concrete examples, as children learn best when they manipulate materials. Use peer discussions to reinforce accurate readings and comparisons, correcting misconceptions as they arise through hands-on trials rather than lectures.

By the end of these activities, students should confidently read litres on measuring jugs, compare container capacities through pouring, and explain why shape does not change volume. They should also recognize the importance of eye-level alignment for accurate readings.

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Watch Out for These Misconceptions

• During the Container Comparison Stations, watch for students who judge volume based on height alone. Have them pour equal volumes into different-shaped containers to observe that the water level changes but the volume stays the same.

  Prompt students to discuss why the same amount of liquid can appear different in height when containers vary in width. Reinforce by asking them to predict and test volume equality using a standard litre measure.

• During the Pour and Read Relay, watch for students who read the scale from above or below eye level. Note when their readings differ from their peers.

  Remind students to lower their heads to eye level with the liquid surface and compare their readings. Ask them to explain why their initial readings might have been inaccurate.

• During the 1 Litre Show and Tell, watch for students who assume all 1-litre containers look identical. Note when they describe the volume based on visual appearance.

  Encourage students to handle each 1-litre item and pour its contents into a standard jug to confirm the volume. Discuss how shape varies but the standard unit remains constant.

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Methods used in this brief

• Experiential Learning