Activity 01
Outdoor Tracking: Stick Shadows
Place identical sticks vertically in the ground at three times: morning, noon, afternoon. Students mark shadow ends with chalk and measure lengths with rulers. Groups discuss patterns and draw time-series diagrams.
Analyze how shadows change length and direction from morning to evening.
Facilitation TipDuring Outdoor Tracking, have pairs mark shadows with chalk every 30 minutes to build a clear timeline of change.
What to look forAsk students to draw a picture of their shadow at the start of the lesson and again at the end. Have them label: 'Morning Shadow' and 'Afternoon Shadow' and write one sentence comparing their lengths.
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Activity 02
Pairs Compare: Tall vs Short
Provide pairs with a tall cone and short block. At the same time each hour, trace shadows on paper. Pairs measure and compare lengths, noting ratios stay similar despite height differences.
Compare the shadow of a tall object to a short object at the same time of day.
Facilitation TipIn Pairs Compare, remind students to use the same measuring point on each object to keep data consistent.
What to look forPresent students with two objects, one tall and one short. Ask: 'If we measure their shadows right now, what do you predict will happen to the shadow of the tall object compared to the short object? Why?' Record student predictions.
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Activity 03
Whole Class: Shadow Clock
As a class, position a stick in a sunny spot to create a shadow clock. Mark positions hourly and label times. Predict next shadow position based on prior data.
Design an experiment to track shadow changes over several hours.
Facilitation TipFor the Shadow Clock, assign small groups to one hour slot so the whole class covers the school day.
What to look forGive students a worksheet with a drawing of the sun in the east, west, and overhead. Ask them to draw the shadow for each position of the sun, indicating its direction and relative length (short or long).
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Activity 04
Individual Design: Shadow Experiment
Students plan their own test, such as tracking a toy car's shadow. They list materials, steps, and predictions, then test over recess and record results in journals.
Analyze how shadows change length and direction from morning to evening.
Facilitation TipIn the Shadow Experiment, set clear safety rules for outdoor work and model how to use metre sticks carefully.
What to look forAsk students to draw a picture of their shadow at the start of the lesson and again at the end. Have them label: 'Morning Shadow' and 'Afternoon Shadow' and write one sentence comparing their lengths.
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Generate Complete Lesson→A few notes on teaching this unit
Teachers should start with what students already see outside each day. Use simple tools like chalk and metre sticks to make abstract ideas concrete. Avoid lectures about angles—instead, let students discover the geometry through repeated measurements. Research shows that daily tracking builds strong spatial reasoning when students compare their own data over time.
Students will explain why shadows lengthen and shorten, predict shadow directions, and measure changes with tools. They will compare objects and record data to show clear patterns.
Watch Out for These Misconceptions
During the Outdoor Tracking activity, watch for students who say shadows get shorter because the sun gets hotter.
Use the Outdoor Tracking activity to redirect this idea: have students observe the sun's angle with torches and objects at different heights during their tracking session to show how light rays change direction, not heat.
During the Outdoor Tracking activity, watch for students who claim shadows always point east-west.
Use the Outdoor Tracking activity to correct this: have students use compasses to note shadow directions at different times and share findings to build consensus on the sun’s changing position.
During the Shadow Experiment activity, watch for students who think clouds make shadows disappear completely.
Use the Shadow Experiment to test this: have students use torches indoors to mimic cloudy conditions and see that shadows only soften, not vanish, linking it back to sun position as the key factor.
Methods used in this brief