Learning Targets
- Identify the test goal and success criteria.
- Define variables, constants, and repeated trials.
- Plan how results will be recorded and compared.
IED Unit 4 • Lesson 4.17
Testing Protocol Development
Focus question: How do engineers design fair tests to evaluate whether a prototype works?
Your lesson guide
Objective
Identify the test goal and success criteria. Define variables, constants, and repeated trials. Plan how results will be recorded and compared.
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 Write a Fair Prototype Testing Protocol.
Success Looks Like
You can write a testing protocol that identifies variables, criteria, procedures, and data to collect.
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Opening Prompt
How do engineers design fair tests to evaluate whether a prototype works?
Connect your response to the decision, evidence, or quality standard required for Write a Fair Prototype Testing Protocol.
Reveal: useful engineering move
This lesson is ready to move forward when the evidence meets this standard: The protocol changes one intended condition at a time and produces evidence tied to a criterion.
Core Skill
What We Are Practicing
A fair test is planned before data collection begins.
Test protocols help teams avoid changing too many variables at once.
The data table should match the decision the team needs to make.
Your Task
Write a Fair Prototype Testing Protocol
Create a repeatable method for measuring whether the prototype meets the Unit 4 performance criteria.
- State the test question and success criterion.
- Identify variables, units, equipment, and trial count.
- Write ordered steps that another team could repeat.
- Create the data table before testing begins.
Quality check: The protocol changes one intended condition at a time and produces evidence tied to a criterion.
Lesson Interactive
Develop a Valid Testing Protocol
Choose the steps and variables needed for a fair, repeatable performance test.
A test protocol controls other conditions, repeats trials, identifies variables, and records measurements consistently.
What You Will Submit
Prototype Test Protocol
Submission standard: The protocol changes one intended condition at a time and produces evidence tied to a criterion.
Resources
Lesson Resources
Lesson 4.17 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.