Lesson Plan

• Describe what a net is and identify its components for prisms, cones, cylinders and pyramids.
• Explain the differences between glue‑tab and mechanical joining methods and when each is appropriate.
• Apply correct construction techniques to assemble a net using the chosen joining method.
• Evaluate material thickness and load requirements to select suitable joining strategies.
• Demonstrate accurate cutting, scoring and assembly within a timed activity.

• Medium‑weight cardstock (A3/A4)
• Scissors or craft knives
• Rulers and metal triangles
• Glue sticks or white glue
• Small pins, screws or snap‑fit fastener kits
• Pre‑printed net templates for prisms, cones, cylinders, pyramids
• Projector or interactive whiteboard

Begin with a quick visual of a folded paper model to spark curiosity about how flat patterns become 3‑D objects. Review students’ prior knowledge of basic shapes and ask them to predict how a net might be assembled. State the success criteria: students will correctly identify joining methods and construct a solid from a net within the lesson.

1. Do‑now (5'): Sketch a net for a chosen solid and label possible glue‑tab and mechanical joints.
2. Mini‑lecture (10'): Explain nets, glue tabs and mechanical joining methods using projected examples.
3. Guided practice (15'): Whole‑class unfolds a printed net, identifies required tabs, and scores fold lines.
4. Hands‑on construction (20'): Students cut, score and assemble their net, choosing either glue or mechanical fasteners while the teacher circulates.
5. Peer review (10'): Pairs inspect each other's models for alignment and strength, suggesting improvements.
6. Exit ticket (5'): Write two criteria for selecting glue versus mechanical joining for a given solid.

Recap the key steps of turning a 2‑D net into a 3‑D solid and the factors influencing the choice of joining method. Collect exit tickets to gauge understanding and assign a brief homework task: design a net for a new solid and specify the most suitable joining technique.