Activity 01
Demonstration: Tilted Globe and Lamp
Place a globe on a stand tilted at 23.5 degrees and shine a desk lamp as the 'Sun.' Rotate the globe to show solstices and equinoxes, marking Ireland's position. Have students note changes in light intensity and day length on worksheets. Discuss as a class.
Explain why the days are longer in the summer than in the winter.
Facilitation TipFor the Tilted Globe and Lamp demonstration, dim the lights so students focus on the light’s angle on the globe, not the room brightness.
What to look forProvide students with two scenarios: 'Summer in Ireland' and 'Winter in Ireland.' Ask them to draw a simple diagram showing the Earth's tilt relative to the Sun for each scenario and write one sentence explaining the difference in daylight hours.
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Activity 02
Pairs: Shadow Length Tracking
Pairs mark stick shadows outside at morning, noon, and afternoon on different days. Compare lengths across summer and winter data if available. Graph results to see how shadows shorten with more direct sun.
Analyze how the Earth's tilt affects the amount of sunlight different parts of the world receive.
Facilitation TipDuring Shadow Length Tracking, have pairs measure shadows at the same time each week to build consistent data sets.
What to look forAsk students to hold a globe and a flashlight (representing the Sun). Instruct them to tilt the globe to represent summer in the Northern Hemisphere and then winter. Ask: 'Which part of the globe is receiving more direct light? How does this relate to longer days?'
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Activity 03
Small Groups: Season Model Builds
Groups use foil balls for Earth, skewers for axis, and flashlights for Sun to recreate tilt positions. Label summer/winter sides and measure 'daylight' hours by shading. Present findings to class.
Compare the characteristics of summer and winter in terms of light and temperature.
Facilitation TipWhen Small Groups build season models, remind students to label the Earth’s axis and sunlight direction to reinforce the 23.5-degree tilt.
What to look forPose the question: 'Imagine you are planning a holiday to Australia. Would you pack for a summer holiday in December or July? Explain your answer using what we've learned about Earth's tilt and hemispheres.'
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Activity 04
Individual: Seasonal Diary
Students draw daily sunrise/sunset times and weather over two weeks. Note patterns in light and temperature. Share in plenary to compare with Earth's tilt explanations.
Explain why the days are longer in the summer than in the winter.
Facilitation TipEncourage students to sketch daily sunlight changes in their Seasonal Diary, using words and arrows to show direction and angle.
What to look forProvide students with two scenarios: 'Summer in Ireland' and 'Winter in Ireland.' Ask them to draw a simple diagram showing the Earth's tilt relative to the Sun for each scenario and write one sentence explaining the difference in daylight hours.
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Generate Complete Lesson→A few notes on teaching this unit
Teach this topic by focusing on evidence students can collect themselves rather than abstract diagrams. Avoid starting with diagrams; instead, let students discover the tilt’s effect through hands-on tasks. Research shows that students grasp seasonal changes better when they manipulate models and observe shadows over time, building from concrete to abstract. Keep explanations short and let activities drive understanding.
Successful learning looks like students confidently explaining how the 23.5-degree tilt shifts sunlight intensity and day length between seasons. They should connect their observations to real-world examples, such as why Irish summers have long evenings or why Australia’s December is warm while Ireland’s is cold.
Watch Out for These Misconceptions
During the Tilted Globe and Lamp demonstration, watch for students assuming the Earth moves closer to or farther from the Sun to explain seasons.
Use the globe and lamp to measure the distance between them with a string; keep students’ hands on the string to prove the distance does not change while the light’s angle on the globe does.
During the Shadow Length Tracking activity, watch for students thinking the Sun changes position in the sky to cause seasons.
Have students mark the Sun’s position relative to a fixed object each week, showing the path shifts north or south but the Sun itself does not move.
During the Small Groups Season Model Builds activity, watch for students assuming both hemispheres experience the same season at the same time.
Ask groups to place labeled flags on their models for Ireland and Australia, then tilt the globe to show how one tilts toward the Sun while the other tilts away.
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