Waka Hull Start

Overview

Lesson 12 of 18 in “Navigating Aotearoa's Oceans” begins your team waka models with the first build phase: hull assembly. Students use blueprints, recycled materials, and simple engineering checks to start constructing stable foundations.

Learning intentions

• WALT construct stable hull foundations that match team blueprint specifications and show basic engineering thinking.
• WALT apply safe practical skills to assemble parts accurately using recycled materials.
• WALT use team planning and communication to measure, test, and improve stability.

Success criteria

• I can assemble hull pieces so the base is level and won’t wobble easily.
• I can follow the team blueprint steps and use measurements consistently.
• I can test stability (gentle tilt/rock test) and explain what I would adjust.
• I can contribute safely to my team and communicate clearly during building time.

Curriculum links

• Technology: engineering principles, designing and building solutions, and evaluating outcomes.
• Applied science and technology skills: measurement, material properties, and safe tool use.
• NZ Curriculum Refresh focus: participatory making, iterative improvement, and using evidence to refine solutions.
• Key competencies: managing self, relating to others, using language/symbols, and participating and contributing.

Lesson structure (70 minutes)

1. 5 minutes – Welcome + goals: Explain that today starts the “hull construction studio”. Share the WALT and success criteria in student-friendly language. Briefly remind students about safe handling of tools and materials.
2. 10 minutes – Blueprint check (station rotation): Students look at their team blueprint and identify the hull foundation shape, materials list, and the first two construction steps. Use a “show me” method: each student finds one measurement mark on the blueprint.
3. 10 minutes – Materials sorting + roles: Assign roles based on strengths (builder, measurer, recorder, materials organiser, quality checker). Pair students for peer mentoring (one confident, one developing). Students set up their workspace and confirm they have the correct recycled components.
4. 25 minutes – Hull assembly begins: Students build the hull foundation following step-by-step guides. Teacher circulates to support accurate alignment, safe joining, and consistency in measurements. Encourage using simple engineering language: “supports”, “strength”, “balance”, “stiffness”.
5. 10 minutes – Stability test + first iteration: Teams perform a gentle stability test (light rock/tilt) and compare results to the blueprint expectation. Students record one change they will make (e.g., add a support strip, adjust alignment, reinforce a joint).
6. 8 minutes – Gallery share (quick feedback): Each group shows their hull foundation for 30–40 seconds. Peers use a sentence starter: “Your hull is stable because… Next, you could improve…”.
7. 2 minutes – Exit reflection: Students complete a short reflection in Google Classroom: “One thing I built well today was… One thing I will change next time is…”. (Teacher can collect as a form for quick data.)

Resources

• Team blueprint printouts (large enough to read clearly) and simplified step cards
• Recycled materials (cardboard, bottle caps, plastic containers, scrap wood strips, craft sticks, straws)
• Joining materials: tape, glue sticks, hot glue only handled by teacher, cable ties (if available), string
• Measuring tools: rulers, tape measures, sticky notes for marking reference points
• Safety equipment: scissors, craft knives only where permitted/monitored, safety glasses if available
• Stability test tools: smooth floor area, a small level object or “check mark” paper for wobble
• Chromebooks and Google Classroom assignment page for reflections
• Peer mentoring “coach” cards (prompt questions and role expectations)

Assessment

• Teacher observation during building: accuracy to blueprint, safe practice, teamwork communication.
• Team stability test evidence: students can describe what they tested and one improvement planned.
• Exit reflection submitted to Google Classroom showing understanding of stability and iterative improvement.

Differentiation

• Construction role assignments based on strengths: measurer/marker for those who prefer precision; builder for hands-on learners; recorder for those who communicate well; quality checker for those who like testing and explaining.
• Step-by-step building guides: include pictorial steps and “stop and check” points for low confidence and dyslexic learners.
• Dyslexia-friendly access: provide spoken instructions, printed instructions with large font, and optional colour-coding for measurements and parts; allow audio recording of peer explanations; reduce text load on work cards.
• Peer mentoring system: partner roles so students can rehearse steps verbally before building; “coach prompts” reduce cognitive load.
• Support for ELL learners: sentence starters (“First we…”, “I measured…”, “This part makes it stable because…”); key terms on a word bank card (support, balance, join, stable, measure).
• Extension for exceeding learners: add an engineering challenge—teams must propose and justify one design modification to increase stiffness using an extra recycled support strip, then test and compare.
• Low-resourced support: if materials are limited, teams can share connectors and reinforcement strips while keeping each student responsible for a specific part and a recorded measurement check.

Extension (optional)

• Advanced build challenge: Design a “reinforcement option” (triangle brace, cross-support, or layered base) and write a short justification explaining how it improves stability, then trial it during the next lesson’s test phase.