Science (EVS K-5) · Class 6

Active learning ideas

Formation of Shadows

Active learning helps students explore shadows practically, not just theoretically. When children test shadow sizes with torches and objects, they see light behaviour directly, making abstract concepts clearer and more memorable than textbook explanations alone.

• CBSE Learning Outcomes
• CBSE: Light, Shadows and Reflections - Class 6

• 25–45 min
• Pairs → Whole Class
• 4 activities

Activity 01

• Experiential Learning
• 30 min · Pairs

Torch Exploration: Shadow Sizes

Pairs use a torch, object, and wall as screen. First, hold torch far from object and note shadow size; then move closer and compare. Record measurements of shadow height each time. Discuss patterns.

Explain how the position of a light source affects the size and shape of a shadow.

Facilitation Tip

During Torch Exploration, circulate with a ruler and ask each group to measure shadow length at three torch distances before recording observations.

What to look for

Provide students with a diagram showing a light source, an object, and a screen. Ask them to draw the resulting shadow and label it. Then, ask them to write one sentence explaining why the shadow formed.

• Apply
• Analyze
• Evaluate
• Self-Awareness
• Self-Management
• Social Awareness

Activity 02

• Stations Rotation
• 45 min · Small Groups

Stations Rotation: Object Types

Set three stations with opaque (book), translucent (butter paper), transparent (clear plastic) objects. Small groups spend 10 minutes at each, shining torch through and sketching shadows on paper. Rotate and share findings.

Compare the shadows cast by opaque, translucent, and transparent objects.

Facilitation Tip

Set up Station Rotation with labelled trays containing one opaque, one translucent, and one transparent object per station to avoid confusion.

What to look for

Hold up three different objects (e.g., a solid block, a frosted glass, a clear plastic sheet) one by one between a torch and a wall. Ask students to call out whether the object is opaque, translucent, or transparent, and to describe the shadow they observe.

• Remember
• Understand
• Apply
• Analyze
• Self-Management
• Relationship Skills

Activity 03

• Experiential Learning
• 25 min · Individual

Prediction Challenge: Light Movement

Individuals predict shadow changes for scenarios like torch above or beside object, using drawings. Test predictions with torch and screen, then verify in whole class discussion.

Predict how a shadow would change if the light source moved closer to the object.

Facilitation Tip

For Prediction Challenge, ask students to sketch their expected shadow shapes on mini whiteboards before testing to make their thinking visible.

What to look for

Pose the question: 'Imagine you are standing in the sun and your shadow is very short. What time of day is it, and why is your shadow short?' Encourage students to explain their reasoning using concepts of light source position.

• Apply
• Analyze
• Evaluate
• Self-Awareness
• Self-Management
• Social Awareness

Activity 04

• Experiential Learning
• 40 min · Small Groups

Shadow Theatre: Creative Play

Small groups create shadow puppets from cardboard, perform stories on a lit screen. Experiment with hand positions to alter shadow shapes and sizes during the show.

Explain how the position of a light source affects the size and shape of a shadow.

Facilitation Tip

Before Shadow Theatre, demonstrate how to hold cut-outs at different angles to the light to show how shadow shape changes with object orientation.

What to look for

Provide students with a diagram showing a light source, an object, and a screen. Ask them to draw the resulting shadow and label it. Then, ask them to write one sentence explaining why the shadow formed.

• Apply
• Analyze
• Evaluate
• Self-Awareness
• Self-Management
• Social Awareness

A few notes on teaching this unit

Teachers should let students struggle with predictions first, then guide them to test ideas with tools like protractors to measure angles. Avoid telling answers upfront; instead, pose questions that lead students to compare their results. Research shows hands-on trials with immediate feedback correct misconceptions faster than lectures.

Students will confidently predict and explain how shadow size and clarity change with light position, object type, and screen distance. They will categorise objects by transparency and justify their observations with evidence from their experiments.

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Watch Out for These Misconceptions

• During Torch Exploration, watch for students assuming shadows match object size exactly without considering light distance or screen gap.

  Ask them to measure the object and shadow sides side by side, then move the torch closer and farther while recording changes to show size variations.

• During Station Rotation, watch for students classifying frosted glass as opaque because it looks cloudy.

  Have them hold the glass close to the torch and observe faint light passing through, then compare to the opaque object in the same tray.

• During Torch Exploration, watch for students drawing curved light rays behind objects.

  Ask them to use a ruler to trace straight lines from torch edges to screen edges, then colour blocked areas to see shadows form from straight paths only.

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Methods used in this brief

• Experiential Learning
• Stations Rotation