Learning Targets
- Identify what a motion or performance graph shows over time.
- Use graph patterns to describe speed, change, delay, or inconsistency.
- Connect graph evidence to a system behavior conclusion.
IED Unit 4 • Lesson 4.8
Motion Graphs and System Behavior
Focus question: How can graphs help engineers understand system behavior over time?
Your lesson guide
Objective
Identify what a motion or performance graph shows over time. Use graph patterns to describe speed, change, delay, or inconsistency. Connect graph evidence to a system behavior conclusion.
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 Represent System Behavior with Motion Graphs.
Success Looks Like
You can interpret a motion or performance graph and connect it to a system behavior claim.
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Opening Prompt
How can graphs help engineers understand system behavior over time?
Connect your response to the decision, evidence, or quality standard required for Represent System Behavior with Motion Graphs.
Reveal: useful engineering move
This lesson is ready to move forward when the evidence meets this standard: The graph uses correct scales and the written interpretation matches the plotted evidence.
Core Skill
What We Are Practicing
Graphs make system behavior easier to compare and communicate.
Patterns over time can reveal delays, spikes, slowdowns, or inconsistent performance.
A graph should support a specific engineering claim.
Your Task
Represent System Behavior with Motion Graphs
Convert position, speed, force, or another measured behavior into a graph that reveals how the system changes over time.
- Identify the variables and units for both axes.
- Organize the measurements in time order.
- Create a properly labeled graph.
- Describe one meaningful trend, peak, plateau, or irregularity.
Quality check: The graph uses correct scales and the written interpretation matches the plotted evidence.
Lesson Interactive
Interpret a Position–Time Graph
Match graph shape to the behavior of a moving mechanism.
Candidate Graphs
A straight position–time line with constant positive slope represents constant speed away from the starting point.
What You Will Submit
Motion Behavior Graph
Submission standard: The graph uses correct scales and the written interpretation matches the plotted evidence.
Resources
Lesson Resources
Lesson 4.8 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.