Teacher Demonstration
Use the live model as a shared screen demonstration before students try their own predictions and observations.
Physics / Newtonian Mechanics
Slinkyebeccaoeimodel
Launch Slinkyebeccaoeimodel directly in Tracker Online, or download the TRZ video-analysis package for mechanics.
1. Watch or Launch
Launch the Interactive
Open the simulation, adjust the controls, and compare what changes on screen before answering the concept-check questions.
2. Big Ideas
Key idea Video analysis of circular or rotational motion turns real footage into position, velocity, and acceleration evidence. The important modelling choices are scale, origin, tracked point, and frame of reference.
What Students Can Learn
- Calibrate the video before reading distances.
- Track a consistent point on the moving object.
- Use curvature or changing velocity direction as evidence.
- Evaluate uncertainty from frame rate, scale, and tracking choices.
Guiding Question
What graph or tracked path evidence shows circular or rotational motion?
3. Try the Investigation
Calibrate
Set the scale and time reference before reading motion values.
Choose a Point
Track the same point on the object in each frame.
Read the Motion Evidence
Compare path, velocity, and acceleration evidence.
Evaluate the Model
Comment on scatter, frame rate, and tracking uncertainty.
4. Teacher Notes
Lesson Use
Use Tracker entries as authentic modelling tasks rather than only video viewing.
Discussion Prompts
Ask: What point was tracked? Where is the origin? Which graph feature supports circular or rotational motion?
Teaching Moves
Require a claim-evidence-reasoning statement using a graph or path feature.
5. Concept Check
These questions are generated from the topic and the concept illustrated by the simulation. Use them after students have explored the model.
Concept Score
Correct first attempts build a streak and unlock higher point multipliers on this device.
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Answer each question once to build your streak.
1. What must be calibrated before measuring distances from video?
2. Why track the same point in every frame?
3. What evidence can support circular motion in Tracker?
4. What can create uncertainty in video analysis?
5. What should the conclusion include?
Expert Challenge
Unlocks after 3 correct concept-check answers on this page.
1. A Tracker circular-motion analysis has a noisy path. What is the best expert feedback?
2. What graph evidence supports circular motion in a video analysis task?
3. Why is tracking the same point on the object important?
4. A student concludes 'it is circular because the video shows a circle' without data. What is the best response?
5. What makes a Tracker conclusion expert-level?
7. Learning Pulse
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