2026–27 · Main lesson · Spring 2027

Investigate Stable Bases and Balanced Structures

Adult extension of: Balancing Stones & Rock Towers

March 1–5, 2027 · planned

Build low tabletop structures, compare base choices, and record a practical stability rule from repeated trials.

Curriculum skill focus: Balance, spatial planning, prediction, perseverance

01 · Learning

Objectives

Select safe materials and agree on a low height limit and clear fall zone.
Build one piece at a time and record whether each arrangement stands without support.
Summarize the most stable arrangement with a sketch and an evidence-based construction rule.

02 · Preparation

Materials

Large lightweight faux stones or broad smooth stones screened for handling; Low tray with non-slip mat; Base-shape picture cards and optional ruler

03 · Practice

Adult project

1
Select safe materials and agree on a low height limit and clear fall zone.
2
Predict which base shape will support the same set of pieces.
3
Build one piece at a time and record whether each arrangement stands without support.
4
Change one placement or base at a time and repeat, avoiding tests that launch or scatter pieces.
5
Summarize the most stable arrangement with a sketch and an evidence-based construction rule.

Evidence & interpretation

What the investigation shows

A tower is more stable when its mass is supported over its base. Shape, contact surfaces, weight distribution, and disturbance affect balance.

Practical connection

Why this work matters

Practice observation, decision-making, shared responsibilities, and communication through a concrete plant or materials task. Participants choose hands-on, planning, or recording roles.

Participation by choice

Individual access options

Offer speech, pointing, gaze, AAC, partner-assisted scanning, or a recorded choice. Follow individual vision and mobility plans. Present one or two items at a time; watching, declining, and taking a break are valid participation.
Use a seated-height tray, stabilized tools, large-print or picture instructions, and partner assistance chosen by the participant.
Reduce the number of comparisons or complete the planning and observation portions without handling materials.

Review & transfer

Reflect on the work

What changed when the base became wider?
How can a failed trial help the next design?