💧 Water Resources

What your child will learn

• Students will identify different sources of water (rain, river, lake, well, tap) and describe how water reaches their home.
• Students will predict and test whether common objects float or sink in water, and give a reason based on material or shape.
• Students will demonstrate that some substances dissolve in water (sugar, salt) and some do not (sand, oil), and distinguish dissolving from melting.
• Students will observe and describe evaporation in everyday situations (drying clothes, puddles, wet floor) and state that water turns into vapour.
• Students will explain why clean water is important and suggest at least three ways to keep water clean and avoid wasting it.

Lessons in this unit

1. Sources of Water: Where water comes from: rain, rivers, lakes, ponds, wells, and taps. How water reaches homes: from a river or well through pipes, or from a tanker. Why water is precious and not to be wasted.
2. Floating and Sinking: Why some things float and some sink in water. Experiment with objects: wood, stone, plastic bottle, coin, leaf, paper boat. Factors: material (wood floats, stone sinks) and shape (a flat piece of clay can float, a ball of clay sinks).
3. Dissolving in Water: Some substances mix completely with water (sugar, salt) and disappear; others do not (sand, oil, chalk powder). Dissolving is different from melting: sugar dissolves, ice melts. Stirring and warm water help things dissolve faster.
4. Evaporation: Water turns into invisible vapour and goes into the air. Examples: wet clothes drying, puddles disappearing, floor drying after mopping. Sun and wind speed up evaporation. Water vapour is still water, just in gas form.
5. Keeping Water Clean: Why clean water is important for health. How water gets dirty: throwing waste, washing clothes in rivers, open drains. Ways to keep water clean: cover water, not throw garbage in water bodies, use a filter, boil water before drinking. Saving water: turn off taps, fix leaks, use a mug instead of a hose.

Key words

source

The place where water comes from, like a river, a well, or rain.

float

To stay on top of water without sinking, like a paper boat.

sink

To go down to the bottom of water, like a stone.

dissolve

To mix completely with water and disappear, like sugar in tea.

evaporation

When water turns into invisible vapour and goes into the air, like a puddle drying up.

vapour

Water in the form of a gas that you cannot see, like steam from a hot cup.

clean water

Water that is safe to drink and does not have germs or dirt.

waste water

Water that has been used for washing or cleaning and is dirty.

Help your child at home

What to watch for

Tap water comes from nowhere; it is always there.

Help: Tap water comes from a river, lake, or well, and travels through pipes to our homes.

Heavy things always sink and light things always float.

Help: A heavy ship floats because of its shape; a light coin sinks because it is solid and small. Weight alone does not decide.

When sugar dissolves, it disappears and is gone.

Help: The sugar is still in the water, spread out into tiny bits. You can taste it.

When water dries up, it disappears from the world.

Help: The water turns into vapour and goes into the air. It is still there, just invisible.

Try this at home

• Riya's water comes from a tap. Where does the tap water come from? Trace back to a river or well.
• Meera drops a wooden block and a stone in water. Which floats? Why?
• Riya adds sugar to her lemonade. Where does the sugar go? It dissolves and spreads in the water.
• Fatima hangs her wet clothes on a line. Where does the water go?

Quick questions to ask aloud

1. Arjun's water comes from a tap. Where does the tap water most likely come from? (a river or a well / the sea / the air)
   Show answer

   a river or a well. Tap water is brought from a river, lake, or well through pipes.
2. True or false: When salt dissolves in water, the salt is still there in the water.
   Show answer

   True. The salt spreads into tiny bits that you cannot see, but it is still in the water.
3. What happens to water when a wet cloth dries? (It turns into vapour and goes into the air / It disappears completely / It turns into ice)
   Show answer

   It turns into vapour and goes into the air. The water changes into vapour, an invisible gas, and mixes with the air.

Parent guide: how to help your child with Class 5 EVS

Frequently asked questions

What will my child learn in "Water Resources" (Class 5 EVS)?

Your child will be able to: Students will identify different sources of water (rain, river, lake, well, tap) and describe how water reaches their home.; Students will predict and test whether common objects float or sink in water, and give a reason based on material or shape.; Students will demonstrate that some substances dissolve in water (sugar, salt) and some do not (sand, oil), and distinguish dissolving from melting.; Students will observe and describe evaporation in everyday situations (drying clothes, puddles, wet floor) and state that water turns into vapour.; Students will explain why clean water is important and suggest at least three ways to keep water clean and avoid wasting it..

How does MangoMindz teach "Water Resources"?

In 5 short parts (Sources of Water, Floating and Sinking, Dissolving in Water, Evaporation, Keeping Water Clean). Each part has a picture-based lesson read aloud by Mango Teacher, a quick check, and a quiz built from common mistakes children make, with Mango, a study buddy, for questions.

How long does "Water Resources" take?

About 160 minutes in total, spread over 5 parts of 15–25 minutes each.

How can I help my child with "Water Resources" at home?

Work through a small example together, such as: Riya's water comes from a tap. Where does the tap water come from? Trace back to a river or well.; Meera drops a wooden block and a stone in water. Which floats? Why?. Then ask a quick question aloud: Arjun's water comes from a tap. Where does the tap water most likely come from? (a river or a well / the sea / the air)

What mistakes do children often make in "Water Resources"?

Tap water comes from nowhere; it is always there. Fix: Tap water comes from a river, lake, or well, and travels through pipes to our homes. Heavy things always sink and light things always float. Fix: A heavy ship floats because of its shape; a light coin sinks because it is solid and small. Weight alone does not decide. When sugar dissolves, it disappears and is gone. Fix: The sugar is still in the water, spread out into tiny bits. You can taste it.

Is "Water Resources" free on MangoMindz?

Yes. Every lesson part and quiz in "Water Resources" is free on MangoMindz, with no ads.