Creating Shadows

Active learning works well for this topic because students need to manipulate objects and light to observe cause and effect. When children move objects closer to or farther from light sources, they build intuitive understanding of how shadows form and change. The hands-on nature helps them connect abstract light behavior to concrete results they can see and measure.

• 1st Year
• Young Explorers: Discovering Our World
• 4 activities
• 25 min–45 min

Learning Objectives

1. Demonstrate how the distance between a light source and an object affects shadow size.
2. Analyze how rotating an object or changing the light source's angle alters shadow shape.
3. Explain the fundamental principle of shadow formation using the concept of light traveling in straight lines.
4. Predict the resulting shadow shape and size when given specific object positions and light source angles.

Stations Rotation

⏱ 40 min·Small Groups

Stations Rotation: Shadow Sizes

Prepare four stations with torches: one for object-to-screen distance, one for light-to-object, one for light angle, and one for object shape. Small groups spend 8 minutes at each, drawing before-and-after shadow outlines and noting changes. End with a class share-out of patterns.

Prepare & details

Explain the process by which a shadow is formed.

Facilitation Tip: During Shadow Sizes, position a ruler next to the screen so students can measure and record shadow lengths at each distance.

Setup: Tables/desks arranged in 4-6 distinct stations around room

Materials: Station instruction cards, Different materials per station, Rotation timer

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

Experiential Learning

⏱ 30 min·Pairs

Shadow Puppets: Story Time

Students cut animal shapes from card for puppets. In dim light, pairs use torches to project shadows on a sheet and act out simple stories. Discuss how moving puppets alters shadow size and shape during performances.

Prepare & details

Analyze the factors that cause a shadow to alter its shape or size.

Facilitation Tip: For Shadow Puppets, dim the classroom lights so the torch beams are more visible and shadows stand out clearly.

Setup: Varies; may include outdoor space, lab, or community setting

Materials: Experience setup materials, Reflection journal with prompts, Observation worksheet, Connection-to-content framework

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

Experiential Learning

⏱ 45 min·Whole Class

Outdoor Prediction Hunt

On a sunny day, whole class uses meter sticks to mark object shadows every 15 minutes. Predict length changes as sun moves, then measure and graph results on chart paper. Compare predictions to data.

Prepare & details

Predict how the position of a light source affects a shadow.

Facilitation Tip: Bring clipboards and pencils for the Outdoor Prediction Hunt so students can quickly sketch shadows before moving to the next station.

Setup: Varies; may include outdoor space, lab, or community setting

Materials: Experience setup materials, Reflection journal with prompts, Observation worksheet, Connection-to-content framework

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

Experiential Learning

⏱ 25 min·Pairs

Matching Pairs: Object to Shadow

Print object images and their shadows at different distances. Pairs sort and match cards, explaining size clues. Extend by creating their own matches with real objects and torches.

Prepare & details

Explain the process by which a shadow is formed.

Setup: Varies; may include outdoor space, lab, or community setting

Materials: Experience setup materials, Reflection journal with prompts, Observation worksheet, Connection-to-content framework

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

Teaching This Topic

Start by asking students to predict how a shadow will change before they move the light or object. This builds anticipation and reveals misconceptions early. Avoid long explanations about light rays before hands-on time. Instead, let students explore first, then guide their observations with targeted questions. Research shows that children learn best when they manipulate materials and discuss findings in small groups.

What to Expect

Successful learning looks like students confidently explaining that shadows form when light is blocked, predicting how moving objects or light changes shadow size, and using terms like 'opaque' and 'light source' accurately. They should also demonstrate curiosity by asking questions about light behavior and shadows during activities.

Watch Out for These Misconceptions

Common Misconception

During Station Rotation: Shadow Sizes, watch for students assuming shadows match object size exactly.

What to Teach Instead

Have students measure and compare the toy’s height with its shadow length at different distances. Ask, 'How does the shadow compare when the toy is close to the screen? What do you notice about the edges?' Guide them to observe that shadows enlarge or shrink based on distance.

Common Misconception

During Shadow Puppets: Story Time, watch for students believing shadows only appear in sunlight.

What to Teach Instead

During the activity, pause to ask, 'What happens if we use the torch instead of sunlight?' Have students use their phone flashlights to create shadows, then explain that any light source works because light travels in straight lines.

Common Misconception

During Outdoor Prediction Hunt, watch for students thinking light bends around objects to create fuzzy edges.

What to Teach Instead

Provide torches with small holes to project sharp beams. Ask students to trace the edges of the shadows and compare them to the object’s outline. Discuss why sharp edges mean light does not bend around the object.

Common Misconception

Assessment Ideas

Exit Ticket

Give each student a small object and a torch. Ask them to create a shadow on a piece of paper. On the back of the paper, they should write: 1) One sentence explaining why the shadow formed. 2) One way to make the shadow bigger and one way to make it smaller.

Quick Check

During the activity, circulate with a checklist. Ask individual students: 'Point to your light source. Point to your object. Point to the shadow. Can you make the shadow change shape? How?' Note their responses and actions.

Discussion Prompt

Gather students and ask: 'Imagine you are playing outside and the sun is high in the sky. Then, the sun starts to set. What happens to the shadows of trees and people? Explain why.'

Extensions & Scaffolding

• After Shadow Puppets, challenge students to create a story where shadows tell the tale without words.
• For students struggling during Shadow Sizes, provide a fixed distance guide (e.g., 'Place the toy 10 cm from the screen') to focus their measurements.
• During Outdoor Prediction Hunt, have students use a protractor to measure the angle of the sun and predict how it affects shadow length and direction.

Key Vocabulary

Opaque	An object that does not allow light to pass through it. Opaque objects are what create shadows.
Light Source	Anything that emits light, such as a torch, lamp, or the sun. The position of the light source is crucial for shadow formation.
Shadow	A dark area formed when an opaque object blocks light. The shadow's appearance depends on the object, the light source, and the surface.
Light Ray	A straight line representing the path of light. Light travels in straight rays, and shadows form where these rays are blocked.