Earth’s Tilt & Seasons

Grade: 6

Duration: 70 minutes

Class Size: 36 students

Subject: Science

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Standards & Learning Objectives

Next Generation Science Standards (NGSS) Correlated to Common Core:

• MS-ESS1-1: Develop and use a model of the Earth-sun system to explain the cyclic patterns of seasons, day and night.
• CCSS.ELA-LITERACY.RST.6.7: Integrate information presented in different media or formats to develop a coherent understanding of a scientific topic.

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Learning Objectives (I Can Statements)

• I can explain why Earth’s tilt causes seasons.
• I can describe how the Earth’s rotation and revolution affect day length and seasons.
• I can use models to show how sunlight hits Earth differently throughout the year.

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Success Criteria

• Accurately describe Earth's tilt and its effect on seasons (verbal or written).
• Construct or use a model to demonstrate Earth’s tilt and seasonal change.
• Explain the pattern of changing day length throughout the seasons.

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Materials Needed

• Globe (one for every 6 students)
• Flashlight (one for every group)
• Seasonal diagram worksheets
• Whiteboard and markers
• Colored pencils
• Chart paper (for group work)
• Mini whiteboards for quick checks

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Lesson Outline

1. Engage (10 minutes)

Activity: "What Season Is It?"

• Show pictures of different seasons (snow, flowers blooming, summer beach, fall leaves).
• Ask: How do we know these are different seasons? What causes seasons? Record student ideas on the board.
• Share the question for today’s lesson: Why do we have seasons?

Differentiation:

• Use visuals and real-world examples to help ELL and below-level learners.
• Encourage advanced learners to hypothesize reasons for seasons before explanation.

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2. Explore (20 minutes)

Activity: Model Earth’s Tilt and Orbit Using Globe & Flashlight

• Divide class into 6 groups (6 students per group).
• Assign roles: one shines flashlight (Sun), one spins globe (Earth’s rotation), one tilts globe and moves it around the flashlight (Earth’s revolution).
• Demonstrate how Earth’s 23.5° tilt causes sunlight to strike at different angles.
• Rotate the globe to show changes in day and night.
• Move globe around flashlight to demonstrate seasonal changes.

Instructions:

• Each group observes how the angle and intensity of light change in different positions.
• Students record observations on worksheet.

Differentiation:

• Provide step-by-step visuals and sentence starters for struggling students.
• Challenge advanced learners to predict day length variations for different latitudes (e.g., poles vs equator).

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3. Explain (15 minutes)

Teacher-led Mini-Lecture and Discussion

• Use diagrams and globe to explain:
  • Earth’s 23.5° axial tilt and its stability
  • How tilt causes seasons by changing the angle and duration of sunlight
  • Why opposite hemispheres experience opposite seasons
  • Link day length changes to position in orbit

Check Understanding:

• Ask students to write or say “I can” statements connecting the model to real-world seasons.
• Use mini whiteboards for quick formative assessment: “Why do we have summer in July in the U.S.?”

Differentiation:

• Use simplified language and visuals for ELL and struggling learners.
• Provide extra challenge questions verbally for gifted learners (e.g., explain equinox vs solstice).

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4. Elaborate (15 minutes)

Group Activity: Create a Seasonal Cycle Chart

• In groups, students create a colorful chart that shows Earth’s position around the Sun for each season and color-codes sunlight angle and climate effect.
• Include labels: Winter Solstice, Summer Solstice, Equinoxes, Earth’s tilt direction
• Groups present their charts in 2 minutes sharing new learning.

Extension for Advanced Learners:

• Ask groups to include explanations of how seasons differ closer to the poles and equator.
• Consider impacts of Earth’s elliptical orbit (briefly).

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5. Evaluate (10 minutes)

Exit Ticket:

• On an index card, answer:
  1. What causes the seasons on Earth?
  2. How does Earth’s tilt affect the length of days?
• Collect cards for formative evaluation.

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Differentiation Summary

Learner Type	Strategies
English Language Learners	Use visuals, sentence frames, pair work, and simplified language
Struggling Learners	Step-by-step guidance with model manipulations, peer support
Advanced Learners	Extension questions on latitude effects, elliptical orbit, and writing scientific explanations
Kinesthetic Learners	Hands-on globe and flashlight exploration

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Reflection & Follow-up

• Students with misconceptions revealed by exit tickets will receive targeted mini-lessons or hands-on sessions.
• Homework: Observe and journal the daylight duration and temperature over a week, noting changes if any.
• Next Lesson Preview: Investigate how the tilt affects climate zones and weather patterns.

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This lesson harnesses hands-on modeling, group collaboration, visual aids, and targeted questioning to deepen understanding of Earth’s tilt and seasonal changes — perfectly aligned with Common Core and NGSS standards for 6th grade science.