- Home
- Canvas Guide
Partial Progress - Circles (browser only)
Measures
Objectives
To measure liquid in litres and to make comparisons.
Resources
Abacus Workbook 3 | Two identical 2-litre bottles with labels covered | Cups | Student's water bottle | Washing-up bowl | 1-litre measuring jug | 1-litre water bottle | Three containers which can contain water, e.g. egg cup, yogurt pot, plastic cup | Assignment 4
Vocabulary
capacity | litre | millilitre
Today's Lesson
Assignment
This lesson works towards Assignment 4. Please access the assignment for details about what you will need to submit to your student's Wolsey Hall tutor.
What to Get Ready
Cover the labels on the 2-litre plastic bottles to hide their capacity. Print out a copy of Assignment 4 ready to use during this lesson.
Introduction
Show your student the two identical 2-litre plastic bottles.
Say, ‘If we measure them, will the capacity of these two bottles be the same?’
Demonstrate that it is the same by pouring water from one into the other, noting that the water comes to the same level.
Empty the water, then ask your student to use cups to find the capacity of one bottle.
Ask, ‘How many cups filled the bottle?’
Write: capacity = __ cups.
Then ask your student to see how many times they can fill the 2-litre bottle from the student’s water bottle.
Ask, ‘How many water bottles filled the bottle?’
Write: capacity = __ water bottles.
Say, ‘So, even though the capacity of the big bottles is exactly the same, it’s confusing to describe the capacity with two different units of measurement.’
Say, ‘Shopkeepers, farmers and factories which package or sell liquids such as milk, squash, fruit juice and petrol don't use cupfuls or bottles to measure liquids. What units of measurement are used?’
Explain that litres and millilitres are used to measure capacity and that it makes life easier for everyone to all use the same units of measurement.
Show your student the 1-litre measuring jug and the 1-litre water bottle. Ask them to look for this measure printed on the jug and bottle.
Show your student that the 2-litre bottle holds 2 litres by filling up the litre measuring jug and emptying it in to the 2-litre bottle twice. Uncover the label on the bottle to show its capacity as 2 litres.
Main Activity
Show your student the tasks from Assignment 4.
Read the instruction given at the top of each activity first, and make sure your student understands what they need to do. Please ask your student to write their answers on the printed out assignment sheet.
Note: The completed assignment should be submitted to your student's Wolsey Hall tutor at the end of Step 12 Lesson 5.
Next, give your student a litre bottle and an egg cup, yoghurt pot and plastic cup. Challenge them to estimate how many of the smaller container will fill the litre bottle and then to find out.
To do this, they should place the litre bottle in the washing-up bowl, fill their container and pour carefully into the litre bottle, counting how many times they do this.
Ask, ‘How many egg cups did your bottle hold? And how many yoghurt pots did it hold? So which bottle holds more or less water? How do we know?’
Then ask, ‘So how many egg cups is the same as half a litre? And how many yoghurt pots?’ Discuss how they could work this out.
Workbook
To help your student consolidate their learning from today, please ask them to complete the activities on page 16 of Abacus Workbook 3.