Colour Wheel Spinner

Overview

Students design and make a simple spinning wheel that demonstrates colour mixing through rotation. They connect a rotating mechanism to the visual effect of colours blending when the wheel spins, while practising planning, constructing, testing and improving a technological outcome.

Learning intentions

• WALT design and make a wheel that spins around a fixed point.
• WALT explain how rotation changes what we see.
• WALT use a simple mechanism safely and accurately.
• WALT test an outcome and suggest an improvement.

Success criteria

• I can make a circular wheel with colours arranged in sections.
• I can attach the wheel so it rotates freely around a fixed point.
• I can describe what happens to the colours when the wheel spins.
• I can test my design and identify one improvement.

Curriculum links

• Technology — designing and constructing a simple technological outcome for a specific purpose.
• Technology — developing and evaluating design ideas through practical testing.
• Mathematics and Statistics — Geometry: a rotation turns a shape around a fixed point.
• Science — Physical Science: simple machines and mechanisms can change movement and direction.

Lesson structure (30 minutes)

1. 0–4 min · Hook and prediction. Open with the colour wheel hook slide and show a completed spinner, or spin a prepared wheel. Ask, “Will we see separate colours, or will they appear to blend?” Students make a quick prediction with a partner and explain their thinking.

2. 4–8 min · Explore the concept. Use the rotation and colour-mixing slides to demonstrate that the wheel turns around a fixed centre point. Explain that the colour sections move quickly and our eyes combine the changing images, creating the appearance of blended or lighter colour. Students identify the centre point, direction of rotation and colours they expect to see.

3. 8–12 min · Model and plan. Demonstrate how to divide a card circle into 6–8 sections, colour each section boldly, pierce the centre and attach the wheel to a straw or pencil so it can spin. Emphasise keeping the hole central, using even pressure and keeping fingers away from scissors and sharp points. Students complete the short design sketch and prediction on the spinner design and testing worksheet.

4. 12–23 min · Make and test. Display the making and testing instruction slides while students work in groups of three: designer/recorder, maker and tester. Each group colours and cuts one wheel, attaches it to its axle, then tests it by spinning with fingers or by pulling a short loop of string. Students record what they observe and make one quick adjustment, such as enlarging the centre hole, reducing rubbing or darkening the colours.

5. 23–27 min · Compare and explain. Invite groups to demonstrate their spinners. Students observe two different wheels and discuss: “Which spun for longer?”, “What made it easier to spin?” and “Did the colours look different while moving?” Groups add one observation or improvement to their worksheet.

6. 27–30 min · Plenary and exit check. Return to the reflection and exit question slide. Students complete: “A rotation is…”, “When my wheel spun, I noticed…”, and “Next time I would…”. Select two students to share explanations using the words rotation, fixed point, spin and test.

Resources

• the colour wheel spinner teaching deck
• the spinner design and testing worksheet
• One sheet of thin card per group
• Coloured pencils or felt pens
• Scissors and rulers
• Pencils, straws or wooden skewers for axles
• Blu-tack, tape and paper fasteners
• Prepared teacher demonstration spinner
• Small containers for shared equipment
• Safety scissors and a blunt-point alternative where available

Assessment

• During modelling, ask students to point to the fixed point and explain why the wheel needs to be balanced around its centre.
• Observe each group’s wheel for clear colour sections, a secure axle and free rotation. Use the worksheet to check whether students recorded a prediction, observation and improvement.
• Use the final responses to assess whether students can explain rotation and describe how testing informed a design change.

Differentiation

• Provide a pre-drawn circle, section lines and a partially assembled wheel for students who need fine-motor, planning or processing support. Allow a partner to help with cutting or piercing.
• Offer dyslexia-friendly worksheets and slides: clear sans-serif font, large print, short numbered instructions, strong colour contrast and diagrams beside each step. Read instructions aloud and allow students to explain ideas orally.
• Support EAL learners with picture-based modelling, gesture and sentence starters: “The fixed point is…”, “My wheel spins when…”, and “I would improve…”.
• For students working beyond the expected level, invite them to compare six and eight colour sections, alter the axle design, or investigate which wheel spins longest and why. They should justify their improvement using evidence from testing.

Extension

• Students design a second wheel with a different colour arrangement and predict how its appearance will change when spun.
• Groups create a labelled diagram showing the wheel, axle, fixed point and the force used to start the rotation.