Cosmic Circles Teacher Guide Cosmic Circles Teacher Guide
Grade Level: 2nd - 3rd | Duration: 45 Minutes
Solar System 101
Lesson Objective
Students will understand the concept of "orbit" and the structure of the solar system by creating physical and artistic models of planetary movement.
Key Vocabulary
Orbit: The path an object takes as it moves around another object in space.Gravity: The invisible force that pulls objects toward each other.Solar System: The Sun and everything that moves around it.Force: A push or a pull on an object.
Materials List
White Paper Plates (1 per student)
Yellow Markers or Paint
Beads or small craft balls
Liquid Glue or Glue Sticks
Thin Black Markers
Lesson Procedure
1
Warm-up: Follow the Leader (5 min)
Assign one student to be the Sun . They stand in the center and spin slowly in place. The rest of the students are Planets . Have them walk in circles (orbits) around the Sun. Encourage them to stay in their own "rings" and not crash into each other!
2
Watch & Discuss: Space Discovery (10 min)
Watch the SciShow Kids video: "Where Did Earth Come From?"
Focus specifically on 2:39-3:25 for planetary formation.
Discussion Question: What shape did the giant cloud of dust turn into? (A frisbee/flat disk)Discussion Question: How did the planets form within that disk? (Gravity pulled dust into clumps/rings)
3
Activity: Paper Plate Solar Systems (20 min)
Color the very center of the paper plate yellow to represent the Sun.
Draw 3-4 concentric rings around the Sun using a thin marker. These are the orbits.
Select beads or craft balls to represent planets.
Glue the planets onto the rings. Remind students that each planet "clears its path" along its orbit!
4
Closure: The Great Pull (10 min)
The Big Question: Why don't the planets just fall into the Sun if gravity is pulling them?
Answer: The planets are moving sideways very fast! Gravity pulls them in, but their sideways speed keeps them moving in a circle. It's a perfect balance. Think of a ball on a string being swung in a circle—the string (gravity) keeps it from flying away, but the speed keeps it from hitting your hand!
Spinning Space Slides Spinning Space
Exploring Orbits, Gravity, and the Birth of our Solar System
Warm-Up: Follow the Leader
The Sun
Choose one student to be the center. Stand still and spin slowly!
The Planets
Everyone else walks in a wide circle around the Sun. Don't touch!
The Challenge
Can you keep a steady circle without getting too close or drifting away?
Space Words to Know
Orbit
The path an object takes as it moves around another object.
Gravity
The invisible pull that keeps everything from floating away!
Watch Carefully!
Video Insight
Embedded media
Focus On:
2:39 — 3:25
The Spinning Disk & Clumps
Watch how the blob of dust turns into a "frisbee" shape!
The Space Frisbee
1
The cloud began to swirl in a giant circle.
2
It flattened out into a disk shape, just like a frisbee .
3
Dust separated into rings around the new Sun.
Gravity is the Pull!
It's like an invisible string that keeps the planets from floating away into the dark, cold space.
Sun → Gravity Pull ← Planet
Activity: Build a Model!
01
Sun Center
Color the center of your plate yellow.
02
Orbit Rings
Draw 4 rings around the Sun.
03
Planets
Choose beads or balls to be planets.
04
Glue Down
Glue them onto different rings.
Final Thought...
If Gravity is pulling the planets, why don't they crash into the Sun?
Because they are moving SIDEYWAYS really fast!
Orbit Map Worksheet My Orbit Map
Space Explorer's Laboratory Log
Name:
Date:
Planetary Layout
Describe your paper plate model. How many rings did you draw? Where did you place your planet beads?
Space Match-Up
The invisible force that pulls things toward the Sun is called:
The path that a planet takes around the Sun is its:
Why no crash?
Finish the sentence: "Planets don't fall into the Sun because they are..."
Orbit Doodle
If you could add a new "mystery planet" to our solar system, where would its orbit be? Draw it below around the Sun.
SYSTEM SCAN COMPLETE • DATA LOGGED • 2026 COSMIC EXPLORATION UNIT
Orbit Map Answer Key Orbit Map Answer Key
Cosmic Circles Assessment Guide
Teacher Resource
Space Match-Up Solutions
The invisible force that pulls things toward the Sun is called:
Gravity
The path that a planet takes around the Sun is its:
Orbit
Why no crash?
"Planets don't fall into the Sun because they are..."
...moving sideways very fast!
Teacher Note: Look for the concept of speed or sideways motion. While gravity pulls them IN, their velocity keeps them moving AROUND.
Observation Guidance
For the Planetary Layout section, students should correctly identify their artistic choices. Check that their description matches their physical model:
Did they mention the Sun being in the middle?
Do they use the word rings or orbits to describe the paths?
Are the "planets" (beads) placed on the lines they drew?
Use this key to facilitate a quick review session at the end of the lesson or to grade completed worksheets.
