Evidence before claims

Community Math Studio

A Grade 6 culminating-project model in which students define a consequential problem, compare mathematical models, test assumptions, reason across languages and representations, revise after critique, and defend a decision.

Current evidence status

The shared Community Math Studio learning contract is implemented across the 22 standard culminating projects. Outcome collection begins with classroom use. No causal learning, equity, or scale claim is published before common measures, scoring calibration, and implementation records are available.

The learning model

Discover + define

Identify a stakeholder, need, constraints, and success criteria.

Estimate + assume

Estimate before calculating and name quantities, units, assumptions, and unknowns.

Build two models

Connect equations with a table, diagram, graph, prototype, or digital representation.

Test + validate

Use evidence, measurements, extreme cases, or another representation to test reasonableness.

Critique + revise

Respond to a peer's notice, question, and challenge with a mathematical revision.

Defend + transfer

Defend the decision, acknowledge a limitation, respond to an audience, and solve a novel case.

What students are expected to demonstrate

Mathematical substance

Accurate content, connected representations, assumptions, validation, tradeoffs, and transfer.

Mathematical language

WIDA-aligned explaining and arguing using quantities, representations, evidence, and respectful critique.

Agency

Meaningful choice of stakeholder, context, model, evidence, language resources, and final recommendation.

Improvement

Visible movement from estimate and first model through feedback, revision, defense, and a new case.

Evaluation measures

ConstructEvidenceQuality check
Content and modelingBaseline task, project artifacts, and novel transfer taskCommon analytic rubric and double-scored sample
Language developmentExplanation, argument, critique, and revision samplesMath and language dimensions scored separately
Opportunity to learnParticipation, completion, support use, revision, and transferResults reviewed across relevant learner groups
Agency and experienceStudent reflection, choice record, and representative feedbackResponse rates and negative cases reported
ImplementationTime, teacher moves, adaptations, and support requestsIndependent-teacher implementation records
Authentic contributionAudience feedback and student responseEvidence that feedback affected a model or decision

Reporting commitments