Page 171 - Math_Genius_V1.0_C2_Flipbook

E:\Working\Focus_Learning\Math_Genius_2_(09-10-2023)\Open_Files\Chap_09
\ 26-Feb-2024 Bharat Arora Proof-5 Reader’s Sign _______________________ Date __________

Learning by Doing

Objective: To estimate the length, weight and capacity and compare.
Materials Required:

For length: A paint-brush, water bottle or any other things

For weight: A toothpaste packet, soap or any other things on which weights are

mentioned
For capacity: A cold-drink bottle/can, a juice packet or any other things on which

capacity is mentioned
Procedure:

Š The students perform the activity in pairs.

Š One member guesses the length of a paint-brush and write its estimated

length.
Š The other member measures the actual length of the paint-brush using a

centimetre ruler and write it.

Š Now, the first member takes a toothpaste packet in his/her hand and guesses
its weight. He/she write its estimated weight.

Š The other member reads the weight mentioned on the toothpaste packet

and write it.
Š Now, the first member takes a soft-drink bottle and write its estimated capacity.

Š The other member reads the capacity of the soft-drink bottle mentioned on

it and write it.
Š Similarly, the length, weight and capacity of other objects can be estimated

and compared with actual measurement.

Mental Maths
1. Fill in the blanks.
(a) 1 m = ___ cm (b) 100 cm + 100 cm = ___ m (c) 1 kg = ___ g
1 1 1
(d) kg = ___ g (e) L = ___ mL (f) L = ___ mL
2 4 2
2. Name any container having a capacity of more than 1 L.

3. What is the length of a toothpick: 5 cm or 5 m?
4. How many centimetres are there in two metres?

Mathematics-2 169