Science (EVS K-5) · Class 1 · Air and Weather · Term 2

The Sun: Our Star

Students are introduced to the Sun as a source of light and heat, essential for life on Earth.

• CBSE Learning Outcomes
• CBSE: The Universe - Sun, Moon and Stars - Class 1

About This Topic

The Sun acts as our nearest star, supplying light and heat that sustain life on Earth. Class 1 students discover how sunlight powers plant growth for food production, warms soil for roots, and supports animals in their habitats. They observe shadows shifting as the Sun moves across the sky, feel its gentle heat during playtime, and connect these to daily routines like waking up in the morning light.

In the CBSE curriculum, this topic falls under The Universe within the Air and Weather unit. It builds foundational skills in observation, questioning, and prediction through key ideas: the Sun's vital role for plants and animals, its provision of light and warmth, and the dire outcomes if it vanished, such as endless cold and darkness halting all growth. These concepts lay groundwork for later earth science topics.

Active learning shines for this topic because young children grasp the Sun's effects best through direct sensory experiences. Simple outdoor observations, shadow play, or warmth comparisons turn abstract facts into personal discoveries. Such approaches spark curiosity, encourage peer sharing, and create lasting understanding over passive listening.

Key Questions

1. Explain why the sun is important for plants and animals.
2. Analyze how the sun provides us with light and warmth.
3. Predict what would happen to Earth if the sun disappeared.

Learning Objectives

• Identify the Sun as the primary source of light and heat for Earth.
• Explain how sunlight helps plants grow and provides warmth for animals.
• Compare the amount of light and heat received from the Sun at different times of the day.
• Predict the immediate effects on Earth if the Sun were to disappear.

Before You Start

Basic Needs of Living Things

Why: Students need to have a foundational understanding of what plants and animals require to survive, such as food and shelter, to grasp the Sun's role.

Day and Night

Why: Familiarity with the concepts of day and night helps students connect the Sun's presence with daylight and warmth.

Key Vocabulary

Sun	The star at the center of our solar system, which provides light and heat to Earth.
Light	Energy that makes things visible, coming from the Sun during the day.
Heat	Energy that makes things warm, felt from the Sun's rays.
Shadow	A dark area formed when an object blocks light from a source, like the Sun.

Watch Out for These Misconceptions

Common Misconception

The Sun is small, like a yellow ball in the sky.

What to Teach Instead

The Sun is a huge star, much larger than Earth; compare with a basketball and marble in group activities to visualise scale. Hands-on size models and distance discussions correct this, building accurate mental images through play.

Common Misconception

The Sun goes away at night and hides behind mountains.

What to Teach Instead

Earth rotates, causing day and night; shadow puppet shows or globe spins demonstrate this. Active rotations help students experience the motion, replacing static views with dynamic understanding.

Common Misconception

Without the Sun, Earth would still be warm but just dark.

What to Teach Instead

The Sun provides both light and heat; shade-sun hand tests reveal the warmth loss. Sensory experiments clarify this link, as peer comparisons solidify the correction.

Active Learning Ideas

Outdoor Shadow Track: Stick Shadows

Place a stick upright in the school ground and mark its shadow tip every 15 minutes with chalk. Students note how shadows change length and direction. Groups discuss why this happens and draw their observations in notebooks.

30 min·Small Groups

Sun vs Shade Feel: Hand Warmth Test

Students hold one hand in direct sunlight and the other in shade for two minutes, then compare sensations. Use a simple thermometer to measure differences if available. Pairs share findings and predict daily temperature patterns.

20 min·Pairs

No Sun World: Role-Play Prediction

Guide the class to imagine Earth without the Sun; act out cold darkness with huddled groups and no plant growth. Students draw 'before and after' pictures. Conclude with a whole-class share on why the Sun matters.

25 min·Whole Class

Plant Sun Need: Potted Seed Watch

Provide pots with moist soil and seeds; place one in sunlight and one in a dark box for a week. Students water daily and record sprout growth. Compare results to explain sunlight's role.

40 min·Pairs

Real-World Connections

• Farmers use sunlight to grow crops like rice and wheat, which are staple foods in India. The amount of sunlight affects how much food can be produced each season.
• Solar panels are used in many Indian homes and businesses to capture the Sun's energy and convert it into electricity, reducing reliance on other power sources.
• Wildlife researchers observe how animals, such as tigers in Ranthambore National Park, use sunlight for warmth and activity, and how their behaviour changes with the day and night cycle.

Assessment Ideas

Quick Check

Show students pictures of different scenarios: a plant growing, a person feeling cold, a shadow on the ground, a solar panel. Ask them to point to the picture that shows the Sun's effect and explain why.

Discussion Prompt

Ask students: 'Imagine you woke up tomorrow and the Sun was gone. What are two things that would be different about our world?' Listen for responses related to darkness, cold, and lack of plant growth.

Exit Ticket

Give each student a drawing of the Sun. Ask them to draw one thing the Sun helps to do on Earth and write one word describing how the Sun makes us feel.

Frequently Asked Questions

Why is the Sun important for plants and animals in Class 1?

The Sun gives plants light for making food through a process called photosynthesis, helping them grow leaves and fruits that animals eat. Animals need its warmth to stay active and healthy. Without it, plants wither and animals face cold, as explored through simple observations and predictions in CBSE lessons.

How does the Sun provide light and warmth to Earth?

Sunlight travels straight to Earth, brightening our days and casting shadows. Its heat warms air, water, and ground, felt during outdoor play. Class 1 activities like shadow tracking and shade comparisons make these effects clear and relatable for young learners.

What would happen if the Sun disappeared?

Earth would turn cold and dark instantly, stopping plant growth and making survival impossible for animals and humans. No warmth means frozen water, no food chains. Role-play and drawing activities help students predict and discuss these outcomes vividly.

How can active learning help teach Class 1 students about the Sun?

Active methods like shadow hunts, warmth tests, and plant observations let children feel and see the Sun's effects firsthand, making concepts stick better than pictures alone. Group discussions during these build language skills and correct ideas through sharing. Such joyful explorations foster scientific curiosity and long-term retention in CBSE classrooms.