🛠️ Measurement Station Prototype & Iteration Log

In small teams, students construct a low-fidelity version of their Measurement Challenge station using classroom materials (balance scales, gram weights, water containers with liter markings, paper task cards, recording sheets). The station must include: (1) an estimation task involving grams, kilograms, or liters and (2) at least one multi-step word problem using operations with units. Teams then conduct a rapid peer test with another group acting as users, observing how accurately users estimate and measure. After feedback, teams revise their prototype (Version 2) and complete an iteration log documenting what was tested, what users said/did, what changed, and why.