Jugs and Mugs

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Grade: 3

Theme: Measurement

Lesson: 11

Lesson Name Jugs and Mugs

Learning Objectives:

Measuring and comparing the capacity of containers, used in daily life, in terms of non-standard units.
Getting a rough idea about how much one litre is.
Using standard measuring units, such as 1 litre, 500 ml, 200 ml, etc.

CRA [Concrete – representation of Abstract]

The teacher needs to present a number of vessels in front of the students and ask them which of the vessels can hold more water than the other. The students can be asked about the vessels that they use daily to carry water, milk, oil, and juice. A discussion can be carried out with the children about the capacity of the different vessels.

The teacher can provide a few real-life examples of how much water one can drink, the vessels used for drinking water, and the vessels used by cows to drink water. These examples will enable the students to have an idea and distinguish the quantity of non-standard measures.

Activity 1: Vessels of different capacities can be given to children, for example, a bucket and a mug. The students can then be asked to fill the bucket with the mug. Similarly, a mug and a small glass may be given to the students, and they can be asked to fill the mug with the glass. Further, the students can be given a glass and be asked to fill the glass with the help of a spoon.

Activity 2: The above activity can be done in reverse. The students can be asked to empty the vessels instead of filling them. These activities will help the students to understand non-standard measures in a clear way.

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Worksheet 1: Arranging vessels which holds lowest capacity to Highest

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Worksheet 2: Find the container which holds More or Less

Learning Objective 2: Getting a rough idea about how much one litre is.

Ask the following questions to test the prior knowledge of students about measuring liquids using standard units of measurement, such as 1 litre, half litre, and millilitres.

Questions to check their prior knowledge:

1. Have you seen a milkman selling milk?

2. How will you ask the milkman to give the required quantity of milk?

3. How will you ask the shopkeeper for the required quantity of milk sold in packets?

4. How will you ask for the required quantity of oil from the shop?

Expected answers from children:

1. Yes. He brings the milk in a big can and measures in terms of half-litre, one litre, and 200 millilitres.

2. Half a litre of milk.

3. Half-litre packet or 1 litre packet.

4. One litre of oil

From the responses of the students, explanation can be provided to them that liquids are measured in terms of litres and millilitres. The teacher can explain about standard measures of measuring liquids, such as litre, 500 ml, 200 ml, 100 ml, and so on. The teacher can also remind the students that they take medicinal syrups in millilitres when they fall sick.

Activity 3—Milkman Activity: A child can be asked to play the role of a milkman. He must be provided with measures as shown in the picture. The other students can be asked to get milk from him.

1. The student playing the role of the milkman can be asked to give 1 litre, 2 litres, and other quantities with the help of the 200 ml mug.

2. The student playing the role of the milkman can be asked to measure 1 litre, 2 litres, and other quantities with the help of the 500 ml mug.

The above activity will help the students have a fair idea that 1 litre is made up of 1000ml.

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Worksheet 3: Find which is more or less in quantity 1000ML makes 1L

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Worksheet 7: To understand 1000ML makes 1L

GBL: ( Game Based Learning)

Winning Strategy: The students are required to empty a bucket using different units of measurement. They must go from the lowest to the highest unit. Using any unit of measurement, they have to pour out one litre. For example, using a 100 ml mug, the students have to pour out water 10 times to empty one litre. They will be required to empty water 5 times using the 200 ml mug and 2 times using the 500 ml mug. After having done this, the students have to record their measurements in a chart. One who measures correctly and empties the bucket will be declared the winner.

Worksheet 6: to understand 1000ML makes 1L

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Integrating Art

After students are aware of the concept of litres and millilitres, a worksheet can be given to them so that they can integrate art with their learning to remember the concept better.

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Worksheet 4: Converting Millilitre to Litre using Colours

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Worksheet 5: Understanding Half and full, More or Less Using colors

Integrating Language and Math

Math Talk:

1. The students can be divided into groups of five. Then, the students can be asked to share various quantities of juice, such as 1 litre, 2 litres, 500 ml, amongst themselves equally.

2. The students can be divided into groups of two. They must be told about the Vitamin A supplement that is given to every kid by the Government (1 ml approx.). They can then be asked how much quantity is needed for their class and for their schools.

3. The government is providing oil for each family for Diwali. 100 ml of oil is provided per head. How much oil will a family get if the family consists of 3 members, 4 members, and so on.

Crossword