Planetary System
The Planetary System project brings the textbook diagram to life. It answers the confusing ques on: 'Why do we have Day & Night, and how does the Earth travel around the Sun?' By building this mechanical model, Class 4 students don't just memorize the solar system—they build the gears that run it, blending Astronomy with Mechanical Engineering.
Gear Trains
Skill practiced while building this kit.
System Assembly
Skill practiced while building this kit.
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About This Kit
What's Included
Parts checklist will appear here once published for this kit.
Learning Outcomes
Build guide (10 steps)
Meet Your Space Crew!
12: Screwdriver (Mission Tool) 13: Battery Box (Power Tank) 14: Yellow Motor (Space Engine) ⚙ 15: Planet Balls (Sun , Earth , Moon ) 16: Yellow Cap (Center Holder) 17: Batteries (Rocket Fuel) 18: Switch (Launch Bu on) 19: Metal Rods (Planet Axles) 20: Red Wire (Connector) 21: Metal Nuts (Tiny Lockers) 22: Long Bolts (Big Pins) 23: Small Screws (Tiny Pins) 24: Blue Spacers (Tiny Rings - Don't lose them!) Wooden Sheets: The Space Sta on Floor! (Look for cut-out numbers).
Building the Launch Pad!
Action: Assembling the stand. Let's build a strong base for our planets! 1. Find the round wooden plate labeled No. 2. This is the floor of our space station. 2. Find the 3 small wooden legs labeled No. 3. 3. Slide and Click: Push the legs into the slots on the round plate. Make sure they fit tight! 4. Now turn it over—your stand should look like a little table.
The Space Engine Room!
Action: Mounting the Motor. Let's install the power that moves the universe! 1. Find the wooden parts labeled No. 4 and No. 5. Put them together to make a small holder. 2.Place your Yellow Motor inside this wooden holder. 3.Lock it down! Use the Long Bolts (Part 22) to secure the motor through the holes. Use the Small Screws (Part 23) to fix the wooden sides tight.
Tower & Power Station!
Action: Connect the wooden tower and plug in the wires! 1. Mount the Tower: Screw your Motor Holder onto the big X Base (Part 2) using Small Screws. 2. Prepare the Switch (18): 3. Twist the Battery Red Wire onto one metal foot of the switch. o Twist the Loose Red Wire (20) onto the other metal foot. Plug into Motor (14): o Find the Female Slots ( tiny holes) on the motor. o Push the Black Plug from the battery into one slot. o Push the Red Plug (from the switch) into the other slot.
Loading the Space Fuel!
Action: Fix the power parts and test the engine! 1. Secure the Parts: Place the Battery Box (13) and the Switch (18) on the wooden floor. 2. Screw it Down: Use the Small Screws (Part 21) and your Screwdriver (Part 12) to fix them tight. 3. Power Up: Insert the Batteries (Part 17). Match the + and - signs correctly. 4. Mission Check: Click the switch ON. Is your engine spinning? Success!
The Giant Gear Ring!
Action: A aching the main orbital ring. 1. Galaxy Floor: Find the large round wooden plate with the number 1 on it. 2. The Great Ring: Take the large ring with "teeth" (Part 8) and place it on top of plate No. 1. 3. Lock the Track: Use the Small Screws (Part 23) and your screwdriver to fix the ring tight to the floor.
The Gear Team!
Action: Matching the gears and their hubs. Let's get the wheels ready to spin! 1. Gather the Crew: Find the two wooden gears with the numbers 10 and 11 on them. 2. Add the Hubs: Find the two 3D-printed parts (Part 16). They look like tiny plastic donuts! 3. The Perfect Fit: Push a tiny donut into the center hole of Gear 10 and another into Gear 11. They should fit nice and snug like a puzzle piece!
The Planet Tracks!
Action: Setting up the spinning rods. 1. Match the Rods: Put the Shortest rod in Gear 11, Medium in Gear 10, and Longest in Gear 9. 2. Add a Ring: Slide one Blue Ring (24) onto the Longest rod. 3. The Bridge: Slide the wooden triangle (Part 9) onto all three rods to connect them. 4. Lock it Down: Slide one Blue Ring onto rods 9 and 11, and two onto rod 10.
The Bridge & The Moon Arm
Action: Locking the gears and preparing the Moon arm. 1. Lock the Bridge: Slide the wooden triangle (Part 6) down onto the three metal rods. It sits on top of the gears. 2. Lock it: Push Blue Rings onto the rod tips: o 1 Ring on the Tall and Short rods. o 2 Rings on the Medium rod. 3. Moon Arm: Push a rod into wooden Part 7. Add a Blue Ring on both top and bottom to lock it.
Planet Placement !!
Action: Placing the planets on their orbits. 1. Moon Orbit: Slide the small Moon arm (Part 7) onto the rod for Gear 10. 2. The Sun: Poke the Big Yellow Ball onto the tallest central rod. 3. The Earth: Poke the Purple Ball onto the medium rod. 4. The Moon: Poke the Small White Ball onto the ny rod on the Moon arm. 5. Li Off! Flip the switch and watch your universe spin!
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