Introduction
This instruction manual provides comprehensive guidance for assembling and utilizing the Engino STEM Toys Physics Laws kit. Designed for children aged 9 and up, this kit allows users to explore fundamental physics principles such as inertia, friction, and circular motion through hands-on model building and experimentation. The kit includes components to construct 6 distinct models, accompanied by educational materials to deepen understanding of scientific concepts.
Safety Information
Choking Hazard: This product contains small parts and is not suitable for children under 3 years of age. Adult supervision is recommended during assembly and play to ensure safe use and prevent accidental ingestion of small components.
What's in the Box
Upon opening your Engino STEM Toys Physics Laws kit, you will find the following components:
- Engino building components (various shapes and sizes)
- Instruction Manual for one model (printed)
- Theory Book with scientific explanations and facts
- Quiz Book to test knowledge
- Experiments section for practical activities
- Access to a Free 3D Interactive App for additional model instructions
Setup & Assembly
The Engino STEM Toys Physics Laws kit allows for the construction of 6 different models. One model includes printed instructions, while the remaining 5 models are available through the interactive 3D app or PDF format online.

Image: Engino STEM Physics Laws kit packaging and an assembled model.
Building Instructions Access
- Printed Instructions: One model's instructions are provided in the box.
- Digital Instructions: For the other 5 models, download the free Engino kidCAD 3D Viewer app (available on Google Play and Apple App Store) or visit the official Engino website to access 3D interactive instructions and PDF manuals.

Image: Printed instructions for one model and a QR code to access digital instructions for other models.
Scan the QR code or visit files.engino.com/?STEM902 for all building instructions in 3D & PDF formats.

Image: Visual representation of the six models that can be constructed: Crash Test Rig, Rubber Band Car, Sharpening Wheel, Inertia Test Platform, Rocket Launcher, and Bow and Arrow.
Engino Advanced Snap-Fit System
The Engino system features a patented connecting mechanism that allows for easy assembly and disassembly of complex models. Components snap together securely, and an extraction tool is provided for convenient separation of parts.

Image: Detailed view of the extendable rod, the patented snap-fit connecting system, and the two options for using the extraction tool for disassembly.
Operating Instructions: Experiments & Learning
The Engino STEM Physics Laws kit is designed to facilitate learning through practical experimentation. Each model demonstrates specific physics principles.

Image: Open pages of the Theory and Quiz books, showing educational content and questions.
Theory & Quiz Book
The included Theory Book provides 12 pages of scientific theory, historical facts, and explanations related to inertia, friction, circular motion, and energy conversion. The 4-page Quiz Book allows users to test their understanding of the concepts learned.
Experiment Section
The Experiments section guides users through step-by-step scientific activities, encouraging hands-on learning and observation.

Image: The sharpening wheel model with text describing how it demonstrates friction and Newton's 3rd Law of motion.
Model-Specific Learning Objectives:
- Rocket Launcher: Learn about elastic energy, spring tension, and escape velocity.
- Crash Test Rig: Understand force, acceleration, mass, Newton's 1st and 2nd Laws of Motion, and inertia.
- Bow and Arrow: Explore energy conversion (kinetic and elastic) and Newton's 3rd Law of action and reaction.
- Sharpening Wheel: Investigate how friction affects motion and Newton's 3rd Law.
- Inertia Test Platform: Observe the principle of inertia.
- Rubber Band Car: Discover how elastic energy is converted into kinetic energy.

Image: Three models (Rocket Launcher, Crash Test Rig, Bow and Arrow) demonstrating their specific physics principles and learning objectives.
Maintenance
To ensure the longevity of your Engino STEM kit, follow these maintenance guidelines:
- Cleaning: Wipe components with a dry or slightly damp cloth. Avoid harsh chemicals or abrasive cleaners.
- Storage: Store all parts in the original packaging or a designated container to prevent loss and damage. Keep the kit in a cool, dry place away from direct sunlight.
- Inspection: Periodically inspect components for any signs of wear or damage. Replace any broken parts to maintain optimal functionality and safety.
Troubleshooting
If you encounter any issues during assembly or operation, consider the following:
- Parts Not Fitting: Double-check the instructions (printed or digital) to ensure you are using the correct parts and connecting them in the specified orientation. Engino parts are designed for a precise fit.
- Missing Parts: Carefully check the packaging and all compartments. If a part is genuinely missing, contact Engino customer support.
- Model Instability: Ensure all connections are securely snapped into place. Refer to the 3D interactive instructions for a detailed view of the assembly steps.
- App Issues: Ensure your device meets the minimum system requirements for the Engino kidCAD app. Try restarting the app or your device.
Specifications
| Product Dimensions | 10.5 x 2.5 x 7.7 inches |
| Item Weight | 1.17 pounds |
| Model Number | ENG-STEM902 |
| Manufacturer Recommended Age | 9 years and up |
| Manufacturer | Engino |
| Release Date | February 1, 2018 |
Warranty & Support
Engino products are manufactured to high-quality standards. For specific warranty information or technical support, please refer to the official Engino website or contact their customer service department directly. Keep your proof of purchase for any warranty claims.
Visit the Engino Store for more products and information.