📏 Tank Criteria and Trade-Offs

Teams study a short set of sample aquarium cards with fish-space needs, shelf limits, and material prices, then use a teacher-modeled example to turn those details into measurable criteria and constraints. Students calculate volume for at least two possible rectangular prism dimensions, including one option with fractional edge lengths, and note how changing dimensions affects material use. Each team records a design brief with target water capacity, maximum outer dimensions, and cost limits in its design notebook.