Learning Targets
- Construct the main structure using the approved plan and materials.
- Align the mechanism so it can move or transfer force as intended.
- Document build changes, problems, and solutions.
IED Unit 4 • Lesson 4.15
Prototype Build Day 1: Structure and Mechanism
Focus question: How do engineers build the structure and core mechanism of a prototype?
Your lesson guide
Objective
Construct the main structure using the approved plan and materials. Align the mechanism so it can move or transfer force as intended. Document build changes, problems, and solutions.
Materials
For the online work: a browser and your engineering notebook. Follow the activity’s materials list for any physical build, and get teacher approval before using equipment.
Plan your time
Suggested work block: 45–60 minutes. Physical builds and projects may span several classes; follow your teacher’s schedule.
Mission Briefing
Today’s Plan
Use this page with the lesson presentation, your engineering notebook, and the tools or evidence assigned for Build the Structure and Core Mechanism.
Success Looks Like
You can build the prototype structure and mechanism while documenting construction evidence.
LaunchLearnApplyCheckSubmit
Opening Prompt
How do engineers build the structure and core mechanism of a prototype?
Connect your response to the decision, evidence, or quality standard required for Build the Structure and Core Mechanism.
Reveal: useful engineering move
This lesson is ready to move forward when the evidence meets this standard: The structure is stable and the mechanism can move through its intended basic range without the electrical subsystem.
Core Skill
What We Are Practicing
Build the functional structure before adding details.
Mechanism alignment affects reliability and motion quality.
Build notes should capture changes while they happen, not after they are forgotten.
Your Task
Build the Structure and Core Mechanism
Construct the prototype frame and main mechanical relationship while documenting deviations from the approved plan.
- Verify materials, tools, and dimensions before cutting or assembly.
- Build the structural base or frame.
- Install the primary mechanism and check free movement.
- Record one build change, issue, or confirmed dimension.
Quality check: The structure is stable and the mechanism can move through its intended basic range without the electrical subsystem.
Lesson Interactive
Sequence the Structural Prototype Build
Arrange the build steps to reduce damage, rework, and hidden fit problems.
Reorder the steps
- Install the moving mechanism
- Inspect fabricated parts
- Verify free movement
- Assemble the structural frame
- Dry-fit all interfaces
Move items with the arrow buttons. Permanent assembly should not happen before inspection and dry fitting.
Begin with part quality and fit. Build the structure before installing and checking the mechanism.
What You Will Submit
Mechanical Build Progress
Submission standard: The structure is stable and the mechanism can move through its intended basic range without the electrical subsystem.
Resources
Lesson Resources
Lesson 4.15 PowerPoint
Use the lesson slides for guided practice, interactive checks, and the exit ticket.
Introduction to Engineering Design
Return to the IED course hub for units, resources, certifications, and current course information.
Build your lesson report
Checkpoint: is your evidence ready?
- Check calculations, units, labels, and measurements against the activity requirements.
- Record what actually happened, including unexpected results.
- Explain what you changed and why; attach required drawings, photos, CAD, or code in your classroom assignment.
Submit the evidence specified in the activity and your classroom assignment. The report below collects your notes, calculations, observations, and reflections; attach any required drawings, photos, CAD, or code separately.
A PDF download is not a submission. Review it, then upload it and any required attachments through your classroom assignment system.