Mastering Comparisons in Measurements: 1st Grade Maths Term 2 Unit 4

Mastering Comparisons in Measurements: 1st Grade Maths Term 2 Unit 4

1st Maths : Term 2 Unit 4 : Measurements

Topic: Comparisons

Introduction to Comparisons

Keywords: Long-Short, Thick–Thin, Tall-Short, Heavy–Light, More-Less

Travel through

Observe the picture.

Illustration of a park scene to introduce comparison keywords

Teacher's Note: Teacher explains the picture for introducing the above keywords.

Long – Short

Learn

Comparison between a long pencil and a short pencil

Practice

Colour the Longer one with Green and the Shorter one with Red

Practice exercise: two paintbrushes of different lengths

Think like a Mathematician.

Which stick will the mother use to get back the kite? Why?

A kite stuck in a tree with a long and a short stick nearby

Answer: The mother will use Long stick to get back the kite. Kite is in higher place on tree, so loner stick only can touch.

Thick – Thin

Learn

Comparison between a thick log and a thin branch

Practice

Tick (✓) the thicker book.

Practice exercise: two books of different thickness

Tick (✓) the thinner tyre.

Practice exercise: a thick and a thin tyre

Try this

Colour the thicker candle with Red and the thinner candle with Green

Two candles of different thickness

Which candle will burn for a long time? Why?

Answer: Thicker candle will burn for a long time.

Tall – Short

Learn

Comparison between a tall giraffe and a short deer

Practice

Colour the taller building with Green and the shorter building with Red

Two buildings of different heights

Which building will consume more colour? Why?

Answer: Taller building will consume more colour. The painting area of higher.

Think like a Mathematician

Which ladder will he use to pick the red coloured book? Why?

A person needing a ladder to get a book from a tall shelf

Answer: Taller ladder will be used to pick the red coloured book. Shorter ladder is not as much height to pick red book.

Heavy- Light

Learn

Comparison between a heavy watermelon and a light apple

Practice

Colour the heavier one with brown and the lighter one with violet

A heavy pumpkin and a light brinjal

Can you suggest a pair of fruits for this concept?

Answer: Jackfruit is heavier. Mango is lighter

Think like a Mathematician

If the mother sits in the place of the boy, what will happen? Why?

A boy and a girl on a seesaw

Answer: The girl moves up to top. Mother is heavier than girl, so girl lift up.

More-Less

Learn

Comparison between a jug with more water and one with less

Practice

Tick (✓) the bottle that contains less water.

Two bottles, one with less water and one with more

Tick (✓) the container that can hold more water.

A large pot and a small cup to compare capacity

Think like a Mathematician

Pouring a packet of milk into a small tumbler

Is it a right vessel to pour the full packet of milk? Why?

Answer: No, Thumbler cannot hold full milk.

Ordering

Learn

Objects arranged in order from shortest to longest

Practice

Tick (✓) the shortest.

Practice exercise: three people of different heights, identify the shortest

Tick (✓) the tallest.

Practice exercise: three trees of different heights, identify the tallest

Teacher's Note: Teacher can help students to develop the idea of ordering objects based on length, mass and height.