Sketching and communicating designs

This lesson focuses on sketching and communicating designs. Interdisciplinary approaches reveal connections that single-subject study might miss.

Engineering applies science and mathematics to design solutions for real problems. Major disciplines: Civil (infrastructure), Mechanical (machines, energy), Electrical (circuits, electronics), Chemical (materials, processes), Computer (software, hardware), Biomedical (medical devices, biotechnology). The Engineering Design Process (iterative): (1) Define problem and constraints/criteria, (2) Research, (3) Brainstorm many solutions, (4) Select best concept (decision matrix rates ideas against criteria), (5) Detailed design and sketching (technical drawings communicate dimensions and specifications), (6) Build prototype, (7) Test against criteria, (8) Analyze failures and iterate. Materials properties matter: strength, ductility, conductivity, weight, cost. Structural engineering analyzes load distribution; failure analysis asks why structures fail to design better. Systems thinking: understand how components interact and how changes in one part affect the whole. Engineering trade-offs are unavoidable—lighter materials may be weaker; lower cost may reduce performance. Sustainable engineering minimizes environmental impact. Ethics in engineering: engineers must consider public safety above client interests.

As you engage with this material, consider both the theoretical foundations and practical applications. Think critically about how this concept builds on prior knowledge and where you might apply it beyond the classroom.

Challenge yourself to go beyond memorization—seek to understand the "why" behind the processes and principles.