This is an enrichment for 3.OA.3. It is designed to go with EnVision Math topic 5, lesson 7 but can go with any lesson instructing 3.OA.3. Students are given a constraint of hainge a specific amount of money to spend on a fish tank. Given this constraint, they have 6 fish to choose from all at different costs with different size limitations for the number of that type of fish that can be in the tank.
This is a DOK 3 question with embedded writing.