2026–27 · Backup lesson · Summer & ESY 2027
Control Rolling Objects at a Workstation
Adult extension of: Why Do Some Things Roll?
Unscheduled alternative · available resource
Compare the movement of a cylinder, sphere, and flat-sided object on a gentle ramp. Turn the observations into a storage or handling method that keeps tools and containers from rolling off a surface.
Curriculum skill focus: Shape and motion, prediction, cause-and-effect, visual tracking
01 · Learning
Objectives
- Predict movement from an object’s shape and orientation.
- Release objects from the same ramp position without pushing.
- Apply the observed movement to safer storage.
02 · Preparation
Materials
Low secured ramp; shallow catch tray; large lightweight ball; empty cylindrical pot or smooth dowel; lightweight block; tape marks; folded towel or stop; recording sheet.
03 · Practice
Adult project
- 1
Inspect the three shapes and choose a practical example such as a round-handled tool or an empty pot. Predict whether each will roll, slide, tip, or stay; use large objects and a catch tray.
- 2
Secure the ramp at a gentle fixed slope and mark a common release line. Demonstrate releasing an object without pushing it and keeping hands clear of its route.
- 3
Release each object in turn from the mark. Record the kind of motion and ending place, repeating once when the result is unclear rather than assuming every curved object behaves alike.
- 4
Turn the cylinder so its long axis points in a different direction and test again. Compare how orientation changes movement while keeping slope and release point unchanged.
- 5
Choose a towel-lined tray, a stable stop, or an orientation change to prevent a selected item from rolling. Test the solution at the same low slope and check that the item remains easy to retrieve.
- 6
Create a simple storage recommendation from the result. Return the ramp and objects, and state when a real sharp or heavy tool should be secured without experimental rolling.
Evidence & interpretation
What the investigation shows
Shape and orientation affect contact with a surface, but friction, mass distribution, slope, and surface texture also influence rolling or sliding. A result for one object is not a rule for all objects with a similar outline.
Practical connection
Why this work matters
Understanding shape and motion helps prevent dropped tools, damaged pots, and interruptions at a garden bench.
Participation by choice
Individual access options
- Release with a broad gate or direct a partner while choosing each object and orientation.
- Use a close-up video, verbal movement description, or tactile inspection of stationary shapes before testing.
- Choose recording or solution design instead of contact with moving items; pause or watch from farther away at any time.
Review & transfer
Reflect on the work
- How did changing the cylinder’s orientation affect its movement?
- Which storage change worked, and what would you check with the real item?