Evaluating a Sewn Bag

Overview

This 45-minute lesson is designed for Year 5 students (ages 9-10) to develop their skills in evaluating a textile product they have sewn and designed collaboratively. It directly supports the Design and Technology programmes of study within the National Curriculum for England, focusing on evaluating their own ideas and products against design criteria.

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National Curriculum Links

• Design and Technology - Key Stage 2
  • "Evaluate their ideas and products against their own design criteria and consider the views of others to improve their work."
  • "Understand how key events and individuals in design and technology have helped shape the world."

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Learning Objectives

By the end of the lesson, pupils will:

• Understand the importance of evaluation in design and technology.
• Use precise vocabulary to discuss textile products.
• Reflect on the design, functionality, and craftsmanship of their sewn bag.
• Identify strengths and areas for improvement based on agreed success criteria.
• Develop constructive questioning skills to give and receive feedback.

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Resources

• The sewn and designed bags created by students.
• Whiteboard and marker for vocabulary and success criteria.
• Evaluation worksheets (simple grids with criteria and space for comments).
• Sticky notes for peer feedback.
• Photos of professionally designed bags for inspiration and comparison.

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Lesson Structure

1. Flying Start – Engaging Hook (5 minutes)

• Display a range of professionally designed bags (images or real samples).
• Ask quick, thought-provoking questions to spark curiosity:
  • “What materials do you think were used in these bags?”
  • “How can you tell if a bag is well made?”
  • “Why might we want to evaluate a product before saying it is finished?”
• Introduce the word “Evaluation” and write it on the board. Define it simply:
  “Evaluation means looking carefully at something to see what is good and what can be better.”

2. Vocabulary and Key Words (5 minutes)

Write and discuss key terminology relevant to evaluation and textiles:

• Evaluation
• Design criteria
• Functionality
• Durability
• Craftsmanship
• Aesthetics
• Strengths
• Areas for improvement

Ask pupils to offer definitions or examples to check understanding.

3. Questioning and Discussion (7 minutes)

Pose strategic questions to the class to deepen reflection on their bags:

• “What was your bag designed to do?”
• “Does your bag meet the design criteria you set at the start? How can you prove that?”
• *“What part of your bag do you think works really well?” (Craftsmanship, colour, size, material?)
• “Is there anything you would change if you made the bag again?”
  Use these questions to structure a brief whole-class discussion. Capture responses on the board, categorised into ‘Strengths’ and ‘Improvements’.

4. Main Task – Evaluation Activity (20 minutes)

• Hand out evaluation worksheets with columns for:

  • Design criteria (from their original plan)
  • How well the bag meets this (tick or scale 1-5)
  • Strengths (written comment)
  • Areas for improvement (written comment)

• Pupils work individually evaluating their own bag against their criteria.

• Encourage honest reflection — remind students that evaluation helps us get better!

• Circulate and support, prompting students with questions such as:
  “How can you explain this part of your bag to someone else?”
  “What evidence can you give for your scoring?”

• Following self-assessment, pupils exchange bags with a partner and complete peer evaluations on sticky notes (focus on constructive feedback: “I like…”, “You could…”).

5. Plenary – Reflect and Share (8 minutes)

• Invite volunteers to share one strength and one improvement they learned from the evaluation (self or peer).
• Reinforce how evaluation fits into the larger design process and helps designers improve their work.
• Final question on the board for pupils to write back to:
  “Why is it important to evaluate our products, and how will this help you next time you make something?”
• Collect evaluation sheets and sticky notes for teacher review and assessment.

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Assessment

• Formative assessment through:
  • Observation of participation in questioning and discussions.
  • Quality and thoughtfulness of self and peer evaluations on worksheets and sticky notes.
• Mark against specific learning outcomes: accurate use of vocabulary, ability to link evaluation to design criteria, and thoughtful identification of strengths and improvements.

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Differentiation

• Provide sentence starters on the evaluation sheets for pupils who need more scaffolding, e.g., “My bag is strong because…” or “If I made this again, I would…”
• More able pupils can be challenged to think about the environmental impact of the materials used or suggest alternative designs.

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Extension Ideas

• Create a digital presentation or blog post summarising their evaluation using photos and typed comments, integrating technology skills.
• Invite pupils to research famous bag designers and discuss how evaluation has led to improvements in their products.

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This lesson ensures that pupils engage with essential Design and Technology skills as outlined in the National Curriculum while promoting critical thinking and self-reflection — key attributes for confident young designers.