Problem Definition and Design Criteria is a Grade 11 Science worksheet focused on engineering design and the reasoning engineers use to define complex problems before developing solutions. Students examine how measurable criteria, constraints, stakeholder requirements, conceptual models, and trade-offs shape the design process.

The resource uses an urban water supply system as a real-world context for connecting engineering concepts to decisions about reliability, capacity, cost, energy use, treatment quality, land, environmental requirements, and construction limits. Students distinguish between criteria used to judge performance and constraints that limit what a design can do. They also consider how residents, businesses, engineers, and authorities may have different priorities.

What Students Practise

• Defining a complex design problem using measurable criteria and constraints.
• Distinguishing criteria, constraints, and stakeholder requirements.
• Explaining how conceptual models organize inputs, processes, outputs, constraints, and stakeholder needs.
• Analyzing trade-offs when requirements compete during solution development.
• Comparing distinct design approaches using consistent criteria.

Students work through a reading passage followed by multiple-choice questions, true-or-false statements, short-answer responses, a labeled diagram, a categorization activity, and a short-note task. The questions ask students to apply the passage concepts to design situations, identify types of engineering information, explain why stakeholders should be considered early, recognize quantitative criteria, and reason about competing requirements.

Teacher-Ready Support

• Answer Key provided as a separate PDF for efficient checking and review.
• Student Notes lines are included at the bottom of the worksheet for written reflection or lesson notes.
• A Teacher Guide is included within the Answer Key PDF with Learning Objectives, Teaching Tips, Discussion Questions, and Common Mistakes.

This engineering design worksheet can support direct instruction, guided practice, independent work, review, or classroom discussion. It gives students repeated opportunities to use the vocabulary of criteria, constraints, stakeholders, conceptual models, and trade-offs in context rather than treating problem definition as a list of isolated terms.

Aligned to the NGSS framework, the resource is suited to Grade 11 Science lessons where students need to reason about how design requirements influence possible solutions. The included teacher support also makes it easier to discuss why several design approaches may be useful and how priorities must sometimes be negotiated when different stakeholder requirements cannot all be maximized at once.