Activity 01
Simulation Game: Human Sundial
On a sunny day, students go outside at three different times: 8-9 AM, midday, and 2-3 PM. They stand in the same spot while a partner traces their shadow with chalk. At the end of the day the class compares the three traces and describes how shadow direction and length changed as the sun's position changed.
Explain why the sun appears to move across the sky each day.
Facilitation TipHave students mark their Human Sundial positions with small flags so they can step back and see the shadow change over time.
What to look forProvide students with a drawing of a simple object (e.g., a stick figure) and a clock face. Ask them to draw the shadow of the object at 9 AM, 12 PM, and 3 PM, labeling the direction (e.g., left, under, right) and relative length (short, medium, long).
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Activity 02
Inquiry Circle: Sun Tracking Log
Over several days, students use a simple picture chart to mark where the sun appears in the sky at morning arrival, during lunch, and at afternoon dismissal. After three days, small groups compare their charts and describe the consistent pattern they found across all observation days.
Predict the sun's position at different times of the day.
What to look forAsk students: 'Imagine you are standing outside at noon. Where is the sun? Where is your shadow? Now imagine it is late afternoon. How has the sun changed its position, and how has your shadow changed?' Encourage them to use the terms east, west, and shadow direction.
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Activity 03
Think-Pair-Share: Why Does the Sun Move?
After observing the sun's daily path, ask students whether the sun is moving or whether something else is happening. Students think individually, pair to build an explanation together, then share. The teacher follows up with a globe-and-flashlight model to demonstrate how Earth's rotation creates the observed pattern.
Analyze how the sun's position affects shadows throughout the day.
What to look forDuring outdoor observation, ask individual students to point to where the sun is in the sky and describe the direction and approximate length of their shadow. Provide immediate feedback on their observations and vocabulary use.
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Activity 04
Gallery Walk: Morning, Noon, and Afternoon
Post three photos of the same outdoor scene taken at different times of day, showing distinct shadow lengths and directions. Students walk around and arrange the photos in chronological order on a timeline strip, then write a one-sentence explanation for their ordering choice.
Explain why the sun appears to move across the sky each day.
What to look forProvide students with a drawing of a simple object (e.g., a stick figure) and a clock face. Ask them to draw the shadow of the object at 9 AM, 12 PM, and 3 PM, labeling the direction (e.g., left, under, right) and relative length (short, medium, long).
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Generate Complete Lesson→A few notes on teaching this unit
Start with what students already notice outdoors, then use simple models to challenge misconceptions. Avoid abstract explanations about axial tilt; instead, let repeated observations build toward the idea of Earth’s spin. Research shows that first graders grasp the sun’s apparent movement before they can fully explain rotation, so focus on observable patterns first.
Students will describe the sun’s movement from east to west, explain how shadows change in length and direction, and begin to connect their observations to Earth’s rotation through discussion and recorded evidence.
Watch Out for These Misconceptions
During the Human Sundial, watch for students who believe the lamp is moving while they spin.
Have students stand still and spin slowly while looking at the lamp. Ask them to describe what seems to move and why, then switch roles so they experience the difference between moving themselves and the lamp staying fixed.
During the Sun Tracking Log, watch for students who record the sun as directly overhead at noon in their location.
Remind students to trace their shadows at noon and note the direction. Ask, 'If the sun were right above you, where would your shadow be?' Have them compare their shadow’s position to the ground to see it points north, not under them.
During the Gallery Walk, watch for students who say the sun always rises in exactly the same spot on the horizon.
Have students look at their Sun Tracking Logs from different weeks. Ask, 'Where did the sun rise on your first observation? Where did it rise today?' Encourage them to describe any small shifts in the horizon line they recorded.
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