Activity 01
Inquiry Circle: Shadow Detectives
Pairs use a flashlight in a darkened corner to cast the shadow of a small cardboard shape onto white paper taped to the wall. They move the shape to three positions: close to the flashlight, halfway, and far away, tracing the shadow outline at each position. Partners compare the three tracings and describe the pattern they see.
What do we need in order to see the objects around us?
Facilitation TipDuring Shadow Detectives, circulate and ask probing questions like 'How is the shadow different from the object? What changes when you move the flashlight?' to guide observations.
What to look forGive students a card with a picture of a flashlight and a ball. Ask them to draw where the shadow would be. Then, ask them to draw what happens to the shadow if the ball moves closer to the flashlight.
AnalyzeEvaluateCreateSelf-ManagementSelf-Awareness
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Activity 02
Simulation Game: Shadow Puppets
Students create simple paper hand cutouts and use a flashlight to cast shadows on the wall. They experiment with holding the cutout at different angles and distances to change the shape and size of the shadow, then share one discovery using the sentence frame 'When I moved it closer or farther, the shadow...'
How does a shadow change when you move closer to or farther away from a light source?
Facilitation TipIn the Shadow Puppets simulation, encourage students to test each puppet’s shadow size at different distances from the light source before recording predictions.
What to look forDuring the activity, ask students: 'Hold up your hand between the flashlight and the wall. What do you see?' Then, ask: 'What happens to the shadow if you move your hand closer to the wall? What if you move it closer to the flashlight?'
ApplyAnalyzeEvaluateCreateSocial AwarenessDecision-Making
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Activity 03
Think-Pair-Share: Where Does the Shadow Go?
Show a photo of a person with a shadow falling to their left. Ask students: if the sun moved to the other side, where would the shadow be? Partners share predictions, then use a flashlight and a small figure to test them. Pairs report their result and whether it matched their prediction.
Can you use your hands and a flashlight to make different shadow shapes on the wall?
Facilitation TipFor Where Does the Shadow Go?, set a timer for two minutes of independent thinking so all students have time to organize thoughts before sharing with a partner.
What to look forGather students and ask: 'What do we need to make a shadow? What happens to the shadow when we move the object closer to the light? What happens when we move it farther away? Can you show me with your hands?'
UnderstandApplyAnalyzeSelf-AwarenessRelationship Skills
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Activity 04
Gallery Walk: Our Shadow Tracings
Each pair posts their three shadow tracings labeled near, middle, and far. Students walk the gallery and place a sticky dot on the tracing that shows the biggest shadow. After the walk, the class reads the pattern together and explains in their own words why the near shadow is the biggest.
What do we need in order to see the objects around us?
Facilitation TipDuring the Gallery Walk, provide colored pencils so students can mark changes in shadow size directly on their tracings for clearer comparison.
What to look forGive students a card with a picture of a flashlight and a ball. Ask them to draw where the shadow would be. Then, ask them to draw what happens to the shadow if the ball moves closer to the flashlight.
UnderstandApplyAnalyzeCreateRelationship SkillsSocial Awareness
Generate Complete Lesson→A few notes on teaching this unit
Teachers should prioritize concrete experiences over explanations. Young students learn best when they manipulate materials, make observations, and verbalize their findings. Avoid explaining abstract concepts like light rays; instead, let students discover patterns through repeated trials. Model curiosity by asking 'What do you notice?' and 'Why do you think that happened?' to build scientific thinking habits.
Successful learning looks like students accurately describing how light travels in straight lines, explaining why shadows form, and predicting how shadow size changes when objects or light sources move. They should confidently use terms like light source, opaque, and shadow with evidence from their investigations.
Watch Out for These Misconceptions
During Shadow Detectives, watch for students who assume shadows match the object’s size. Redirect by asking them to trace the shadow and compare it to the object, then move the object closer to the flashlight to observe the size change.
During Shadow Detectives, have students measure the shadow’s length with a ruler and compare it to the object’s height. Ask them to predict what will happen if they move the object closer, then verify their predictions by measuring again.
During Shadow Detectives, listen for statements that shadows only form in sunlight. Redirect by asking students to test their hypothesis using the classroom flashlight in a darkened corner.
During Shadow Detectives, provide both a flashlight and a sunny window option. Ask students to compare shadows made by each light source, reinforcing that any blocked light creates a shadow, regardless of source.
Methods used in this brief