Environmental Protection and STEAM Workshop

Plastic Recycling, Green Energy, and 3D Model Design Workshop

Course Code: TC-B-C-03

Audience

Grades P4 to P6

20–40 students

Total duration: 3 hours

Each session: 1.5 hours (2 sessions)

On-campus classroom (Internet and computers required)

Understand major environmental impacts of plastic waste and the concept of circular economy
Identify common plastics used in 3D printing (PLA, PET, PETG) and household plastics suitable for recycling
Describe the process of turning waste plastic into 3D-printing filament (sorting, cleaning, melting, extrusion)
Use Tinkercad to design simple 3D models related to green energy or environmental themes
Export printable file formats (for example, STL) and explain links between design choices and sustainability
Reflect on how recycling and design can support sustainable innovation

Session	Topic	Expected Learning Outcomes	Duration
1	Plastic Recycling and Circular Reuse	•Summarize environmental problems caused by plastics and understand circular-economy concepts •Identify common 3D-printing plastics and distinguish recyclable materials •Explain the basic workflow: sort → clean → melt → extrude filament → print •Observe and participate in demonstration of converting recycled plastic into printing filament •Reflect on ways to make 3D printing more eco-friendly	1.5 hours
2	Green Energy 3D Design and Applications	•Understand fundamentals of green energy (wind, hydro, solar, etc.) •Build simple wind-turbine and waterwheel models in Tinkercad •Understand symmetry, structure, and simplified design concepts to improve print efficiency •Export STL files and explain how design decisions relate to environmental goals	1.5 hours