This is a high-quality, "meat-and-potatoes" math resource. On TpT, teachers go crazy for PBL (Project-Based Learning) that actually includes the "support" pieces like role cards and rubrics.
Here is a comprehensive product description designed to convert browsers into buyers.
Fraction Architects: A High-Interest PBL Math ChallengeDesign, Defend, and Build: Real-World Fraction ApplicationAre you looking for a way to move beyond "pizza slices" and help your students truly master fractions as operators? Fraction Architects is a rigorous, Project-Based Learning (PBL) experience designed to challenge your 4th and 5th-grade mathematicians to think like urban planners.
In this simulation, students aren't just solving equations—they are making critical decisions for "Fraction City." From land allocation to infrastructure budgeting, every choice must be justified with mathematical evidence.
Why Teachers Love This Resource:

• Built-in Differentiation: Perfectly suited for Gifted and Talented (GATE) clusters or enrichment groups, but scaffolded enough for your core math block.
• Standards-Based Rigor: Focuses on fractions as operators, equivalent fractions, and scaling—moving students toward deep conceptual understanding.
• Collaborative Logic: Includes unique Small Group Role Cards (Architect, Checker, Challenger) to ensure every student is engaged and critiquing the reasoning of others.
• Comprehensive Teacher Support: Includes a detailed answer key with multiple solution paths, common misconception coaching questions, and a ready-to-use rubric.

What’s Included in This Download?

• Part 1: Fraction Illusions (Warm-Up): A 10-minute diagnostic to kickstart mathematical discourse.
• Part 2: The Fraction City Challenge: Three complex tasks covering:
  
  • Land Allocation: Finding common denominators and justifying land use.
  • Road Construction: Mastering fractions as operators (multiplication of fractions).
  • The Budget Battle: Calculating fractions of large whole numbers ($1,000,000).

• Part 3: Fraction Forensics: An extension challenge that tackles the common misconception that "multiplication always makes numbers bigger."
• Group Role Cards: Printable cards for the Architect, Checker, and Challenger.
• Student Self-Assessment Rubric: To encourage metacognition and reflection.
• Teacher Answer Key & Coaching Guide: Includes specific questions to ask students when they get stuck.

Perfect For:

• Math Centers & Rotations
• Early Finisher Extensions
• Sub Plans (with the included answer key!)
• STEAM / Engineering Integrated Units

Transform your fraction unit from "rules and procedures" into a creative engineering challenge. Grab Fraction Architects today!
Looking for more STEAM? Check out my [Amplify Science Supplements] and [K-5 Common Core Math Bundles] in the sidebar!