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Subject: General Science
Semester: 1
Period: 2
Week: 7
School Name:
Teacher’s Name:
Subject: General Science
Grade Level: Grade 3
Date: Week 7
Lesson Duration: 45 minutes
Week & Period: Week 7, Period 2
Topic: The Solar System
Sub-topic: Differentiating Planets
Learning Objectives
By the end of the lesson, students should be able to:
tell the distance between the sun and each of the planets.
tell why we have eight planets instead of nine.
define the terms: star, satellite, meteor, meteorite, eclipse, and galaxy.
Previous Knowledge
Students already know:
The Sun is at the center of the Solar System and planets orbit around it.
Instructional Materials
Solar system chart, globe or model of planets, images of planets, flashcards with space terms.
Lesson Development – ABC Model
A – Anticipation (Warm-up / Starter)
Time: 5–10 minutes
Ask learners to name the planets they know. Show a model or chart of the solar system and ask, “Which planet is closest to the Sun? Which is the farthest?”
B – Building Knowledge (Main Lesson Body)
Time: 25–30 minutes
Learners’ Activities (Expanded):
- Learners observe a solar system model (physical model, globe with planet stickers, or diagram) and identify each planet in order from the Sun: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune.
- Students measure or estimate distances between the Sun and each planet using the model, strings, rulers, or scaled markers to understand relative distances.
- Learners discuss why Pluto is no longer classified as a planet, emphasizing its size, orbit, and the definition of a planet.
- Students use space terminology flashcards and work in pairs or groups to match each term with its correct definition (star, satellite, meteor, meteorite, eclipse, galaxy).
- Optional activity: learners create a simple chart or mini-poster of the solar system with planets and key terms, labeling each component.
Assessment Checks (Expanded):
- Ask learners to explain why Pluto is not considered a planet and compare it to other planets.
- Ask learners to give definitions of:
- Star – a luminous ball of gas producing light and heat (example: Sun)
- Satellite – a body orbiting a planet (example: Moon)
- Meteor – a space rock entering Earth’s atmosphere
- Meteorite – a space rock that reaches Earth’s surface
- Eclipse – the temporary blocking of the Sun or Moon
- Galaxy – a large system of stars, planets, and other celestial bodies
- Observe participation during discussions, matching flashcards, and model-based activities.
- Ask learners to share one interesting fact they learned about a planet or space term.
Notes (Expanded & Detailed):
- The solar system consists of eight planets orbiting the Sun at different distances.
- Mercury, Venus, Earth, Mars – inner planets, smaller and rocky.
- Jupiter, Saturn, Uranus, Neptune – outer planets, larger and gaseous (except Neptune and Uranus, which are ice giants).
- Pluto is classified as a dwarf planet due to its small size and irregular orbit.
- Stars are luminous bodies in space producing their own light and heat (example: Sun).
- Satellites orbit planets; natural (Moon) or artificial (space stations).
- Meteors are space rocks entering the Earth’s atmosphere; if they reach the surface, they are called meteorites.
- Eclipses occur when the Sun, Earth, and Moon align, causing either a solar or lunar eclipse.
- Galaxies are vast systems of stars, planets, gas, and dust, e.g., the Milky Way.
- Emphasize relative distances and sizes using the model to help learners visualize the solar system.
- Encourage learners to observe the night sky for stars and planets to relate classroom learning to real-life experience.
C – Consolidation (Conclusion & Assessment)
Time: 5–10 minutes
Summary:
Recap the eight planets and their order from the Sun. Review key space terms and ensure learners understand why Pluto is no longer a planet.
Evaluation Method (Expanded)
Exit slip/quiz: Learners list all eight planets in order from the Sun and define two space terms.
Teacher will collect slips and provide oral feedback.
Assignment (Expanded)
Draw a diagram of the solar system showing the eight planets and label them.
Follow-up Activity
Create a class poster with pictures of the eight planets and key space terms.
Differentiation / Inclusive Strategies
Provide visual aids and large models for learners with difficulty visualizing. Pair learners for discussions. Offer extra guidance for those with writing or reading challenges.
Teacher’s Reflection (After Class)
What worked well? ___________________________________________
What needs improvement? ____________________________________
Students’ engagement level: ☑ High ☑ Medium ☑ Low