Solar System | Project Based Learning
In this 15-minute project-based lesson, students work in small groups to create a quick scale model or diagram of the solar system that shows the order of planets, relative sizes, and basic orbital movement. They use evidence, discussion, and teamwork to solve a design challenge and explain their choices.
| Term | Definition |
|---|---|
| Solar System | The Sun and all objects that orbit it, including planets, moons, asteroids, and comets. |
| Orbit | The path an object follows as it moves around another object in space. |
| Scale | A comparison between the size of a model and the real object it represents. |
| Planet | A large object that orbits the Sun and does not produce its own light. |
| Astronomical Unit (AU) | A unit used to measure distances in the solar system, based on the average distance from Earth to the Sun. |
Show a quick prompt: 'How can we represent the solar system accurately in a small classroom model?' Present the task and success criteria.
Think briefly, then share one idea with a partner.
Review the order of the planets and explain that distance and size are not accurate in a simple drawing unless scaled. Model one example of a scaled choice.
Listen, follow along, and record the planet order if needed.
Assign groups and provide materials. Guide students to create a quick model/diagram showing the Sun, planets in correct order, and at least one labeled scale note or comparison statement.
Work collaboratively to create the model, label key parts, and prepare a one-sentence explanation of their scale choice.
Ask one or two groups to present their model and explain how they represented scale or motion.
Present briefly and listen to other groups' ideas.
Ask each student to complete a sticky note response: 'One thing our model shows accurately is... One limitation is...'
Write and submit an exit response.
Reinforce that models help scientists communicate ideas, but all models have limits. Ask students to name one feature their model captured well and one feature it could not fully represent.
Formative assessment through teacher observation during the group task, review of the group model for correct planet order and labels, and the exit ticket response for understanding of scale and model limitations.
Create a one-page comparison of Earth and one other planet of your choice. Include three facts, one visual, and a short paragraph explaining how their sizes or distances compare.