Science · Year 2 · The Changing Sky · Term 3

Sun's Daily Path

Students will observe and record the apparent movement of the sun across the sky from sunrise to sunset.

• ACARA Content Descriptions
• AC9S1U02

About This Topic

The sun's daily path across the sky results from Earth's rotation on its axis once every 24 hours. Year 2 students observe this apparent movement by noting the sun's position at sunrise in the east, highest at midday in the south, and sunset in the west during Australian winter. They record changes through shadow lengths and directions, which lengthen and shift predictably. This aligns with AC9S1U02, where students describe daily and seasonal changes caused by Earth's movements.

This topic connects sky observations to patterns in nature, fostering skills in data recording, comparison, and prediction. Students compare morning shadows, which point west, to afternoon ones pointing east. Predictions about sunrise and sunset positions build confidence in scientific reasoning and link to daily routines like playground play under changing light.

Active learning suits this topic well. Outdoor shadow tracking or classroom models with torches and globes let students gather real-time data, turning abstract rotation into visible evidence. Collaborative charting reinforces patterns through discussion, making concepts stick through direct experience.

Key Questions

1. Explain why the sun appears to move across the sky each day.
2. Compare the sun's position in the morning to its position in the afternoon.
3. Predict where the sun will rise and set.

Learning Objectives

• Compare the sun's position in the morning sky to its position in the afternoon sky.
• Record observations of the sun's apparent movement from sunrise to sunset.
• Explain that the sun appears to move across the sky because the Earth is rotating.
• Predict the general direction of sunrise and sunset based on daily observations.

Before You Start

Observing and Describing Objects

Why: Students need to be able to carefully observe and describe what they see, including the position and length of shadows.

Directions: North, South, East, West

Why: Understanding basic directional terms is essential for describing the sun's position and movement across the sky.

Key Vocabulary

Sunrise	The time in the morning when the sun appears above the horizon. For many places, this is in the east.
Sunset	The time in the evening when the sun disappears below the horizon. For many places, this is in the west.
Apparent Movement	How something looks like it is moving, even though it is actually stationary or moving in a different way. The sun appears to move across our sky.
Earth's Rotation	The spinning of the Earth on its axis, which causes day and night and makes the sun appear to move across the sky.

Watch Out for These Misconceptions

Common Misconception

The sun travels around the Earth each day.

What to Teach Instead

Earth's rotation causes the sun's apparent movement from east to west. Hands-on globe models with torches help students see this directly, as they rotate the globe and watch the 'sun' appear to move. Group discussions clarify the shift from geocentric to heliocentric views.

Common Misconception

Shadows always point toward the sun.

What to Teach Instead

Shadows point away from the sun, opposite its position. Shadow stick activities reveal this pattern through measurement and mapping. Peer observation challenges initial ideas and builds accurate mental models.

Common Misconception

The sun rises in the exact same spot every day.

What to Teach Instead

Slight daily shifts occur due to Earth's orbit, but daily path is consistent east to west. Tracking over weeks with charts shows subtle changes. Collaborative data plotting helps students notice and explain variations.

Active Learning Ideas

Outdoor Shadow Tracking: Stick Method

Place sticks in the ground at sunrise, midday, and sunset. Students measure and record shadow lengths and directions with rulers and compasses. Groups sketch changes on worksheets and discuss patterns at the end.

45 min·Small Groups

Classroom Model: Torch and Globe

Use a globe as Earth and a torch as the sun. Rotate the globe slowly while marking observer positions. Students predict and draw the sun's path on paper, then verify with the model.

30 min·Pairs

Sunrise Sunset Chart: Whole Class Data

Assign students to record local sunrise and sunset times daily for a week using reliable apps or calendars. Plot on a class chart and compare morning to afternoon positions.

20 min·Whole Class

Prediction Walk: Schoolyard Path

Walk the school grounds at different times, noting sun position relative to landmarks. Predict next-day positions and test observations the following day.

25 min·Individual

Real-World Connections

• Farmers use knowledge of the sun's path to orient greenhouses and plant crops in locations that receive optimal sunlight throughout the day, impacting crop yield.
• Architects and builders consider the sun's daily path when designing buildings to maximize natural light and minimize heat gain in summer, affecting energy efficiency and comfort.

Assessment Ideas

Exit Ticket

Provide students with a simple diagram of a house. Ask them to draw the sun in the morning (e.g., east) and in the afternoon (e.g., west), and draw the shadow cast by the house in each position. Ask: 'Where does the sun appear to be at lunchtime?'

Discussion Prompt

Ask students: 'Imagine you are playing outside at 9 AM and again at 3 PM. How would the sun's position in the sky be different? How would your shadow be different?' Encourage them to use vocabulary like 'sunrise', 'sunset', and 'apparent movement'.

Quick Check

Observe students during outdoor shadow tracking. Ask individual students to point to where the sun is and where their shadow is pointing at different times of the day. Ask: 'What do you think will happen to your shadow in one hour?'

Frequently Asked Questions

How can students safely observe the sun's daily path?

Avoid direct sun gazing; use shadows from sticks or hands instead. Position observers facing north in Australia to note east-west arcs. Integrate with PE walks or recess to embed observations naturally, ensuring hats and sunscreen for outdoor time.

What active learning strategies work best for the sun's daily path?

Shadow tracking outdoors or torch-globe models indoors provide tangible evidence of rotation. Small groups rotate roles in data collection, like measurer or recorder, promoting engagement. Follow with whole-class charts to reveal patterns, deepening understanding through shared analysis and prediction challenges.

How does this topic link to other Year 2 areas?

Connects to maths through measuring and graphing shadows, literacy via descriptive journals of sky changes, and HASS for daily routines affected by light. Seasonal extensions tie to geography patterns, creating cross-curricular depth.

How to differentiate for diverse learners in sun path observations?

Provide pre-marked shadow templates for motor challenges, digital timers for timing rotations, or bilingual labels for EAL students. Extend predictions for advanced learners with seasonal comparisons. All access core concepts through visual models and group supports.