Measurement by standard tools

Measurement by standard tools

Meena & her mother

Mother : Meena! Pour one tumbler of water into the flour.

Meena : Ok, ma!

Mother : The batter is so thick. Did you pour one full tumbler of water?

Meena : Yes, ma!

Mother : Which tumbler did you use?

Meena : Ma, I used the small tumbler.

Mother : You have to use a bigger one.

Meena : Okay ma.

Mother : Meena! Now bring me 2 tumblers of water to pour in this milk.

Meena : Ma, I have brought water in big tumbler

Mother : Meena, now you should have brought water in the small tumbler.

Meena : Ma, Sometimes you ask me to bring water in big tumbler and sometimes small tumbler. I don't know when to bring in big tumbler and when to bring in small tumbler.

What shall we do to find a solution for this issue?

We need a standard tool to measure capacities of containers. We also need a standard unit to express capacities of containers.

These are some Standard tools to measure capacity. You can find them in milk shops, grocery shops, etc., We measure liquids such as water, oil, milk, petrol., using these tools.

Standard units for measuring capacity of a container is litre.

* We measure liquids smaller containers using millilitres.

* We measure the liquids of more quantity /capacity of bigger containers using litres.

Activity

1. Teacher can conduct the game, fill in the bottle.

2. Teacher can conduct a mock milk shop in the class.

1. Complete the table classifying these under the given table.

Less than 1 litre vessel

1. Medicine bottle

2. Tumbler

3. Water pot

More than 1 litre vessel

1. Pot

2. Oil can

3. Water can

2. Tick the appropriate unit to measure the given liquid.

3. Tick / underline the biggest unit

i. a) 500 ml b) 100 ml c) 50 ml d) 75 ml

ii. a) 200 ml b) 300 ml c) 150 ml d) 175 ml

iii. a) 5 l b) 2 l c) 8 l d) 7 l

iv. a) 3 l b) 300 ml c) 30 ml d) 30 l

v. a) 250 ml b) 1500 ml c) 760 ml d) 75 l

4. Circle/ underline the smallest unit

i. a) 250 ml b) 350 ml c) 50 ml d) 750 ml

ii. a) 300 ml b) 350 ml c) 800 ml d) 275 ml

iii. a) 10 l b) 3 l c) 9 l d) 6 l

iv. a) 3 l b)350ml c) 5 ml d) 40 l

v.a) 2500 ml b) 100 ml c) 810 ml d) 175 l

5. How many litres of water do you use for the following purpose in your house? Complete the table.

6. How many litres are needed for filing the given containers. Complete the table by measuring the containers by one litre bottle.

Bottle 1 1 litre bottles

Bucket 20 1 litre bottles

Pot 40 1 litre bottles

Activity

Take a 1 litre bottle and a tumbler fill the bottle using it.

How many times did you use the tumbler for filling the bottle ?

4 times

Repeat the same activity using different containers (Cups, tumblers, bottles ) and record you findings.

1. Which container was used twice?

Cups

2. Which container was used four times?

Tumblers