Light Properties

Overview

In this lesson, students investigate and communicate how light behaves through absorption, reflection, refraction, and scattering. They use laptops with interactive questioning (Mentimeter) and create short explanatory video clips using YouTube Studio, building both scientific understanding and scientific communication skills.

Learning intentions

• Students will describe how light can be absorbed, reflected, refracted, and scattered in everyday contexts.
• Students will follow a planned procedure to gather reliable evidence of light behaviours using provided examples/mini-demonstrations.
• Students will use Mentimeter to check understanding and adjust explanations using scientific language.
• Students will communicate a scientific argument about one light property using evidence in a short video.

Success criteria

• I can explain what happens to light for absorption, reflection, refraction, and scattering.
• I can use correct terms (e.g. incident ray, normal, reflected ray) when needed.
• I can link an observation to a claim using evidence and scientific language.
• I can create a short video that accurately explains one property and gives at least one real-world example.

Curriculum links

• SC5-WS-04 — Students follow a planned procedure to undertake safe, ethical, valid and reliable investigations.
• SC5-WAM-01 — Students describe the features and applications of different forms of waves (including light).
• SC5-WS-05 — Students select and use a range of tools to process and represent data.
• SC5-WS-08 — Students communicate scientific arguments with evidence, using scientific language and terminology.

Lesson structure (60 minutes)

1. 0–7 min · Hook and prior knowledge. Teacher starts with the introduction slides showing a rapid “mystery light” collage (e.g. sunglasses glare, rainbow in mist, clear vs frosted glass) and asks: “Which light behaviour best explains each image?” Students respond individually using Mentimeter on laptop, then quickly compare answers with a partner.

2. 7–18 min · Direct teaching: four behaviours. Teacher uses the introduction slides to teach absorption, reflection, refraction, and scattering with brief, concept-focused examples and common misconceptions (e.g. “refraction is not just bending—it's changing speed and direction”). Students take a short “1-key idea per property” note on the light properties worksheet.

3. 18–27 min · Quick check and modelling. Teacher returns to the introduction slides and runs 3–4 Mentimeter questions: one definition check, one “choose the best explanation”, and one misconception prompt. Students answer, then revise one entry on the light properties worksheet with a different colour pen after teacher confirms correct concepts.

4. 27–45 min · Investigation planning (light behaviours in context). Teacher distributes the light properties worksheet (if not already) and explains that groups will use provided scenarios (image set and short observation prompts from the worksheet) to “test” claims about light behaviour. Students in pairs choose one scenario and complete a planned-procedure grid: claim, evidence they can cite from the scenario, reasoning, and terminology to include. Teacher circulates to ensure procedure is planned, ethical, and that claims match evidence (aligned to SC5-WS-04).

5. 45–57 min · Video creation (YouTube Studio) and evidence-based explanation. Teacher introduces the task using the introduction slides: create a 20–40 second explanatory video in YouTube Studio where they select one property, state the claim, show evidence from their scenario, and give a real-world application. Students use laptops to storyboard (2 minutes), record (with captions/clear speech), and do a final check for scientific language.

6. 57–60 min · Plenary and exit check. Teacher ends with the introduction slides: students complete a final Mentimeter exit question (“Which property is most responsible for… and why?”). Teacher collects the light properties worksheet and notes common errors to address next lesson.

Resources

• the introduction slides (hook images, mini-lesson content, Mentimeter question prompts, video task checklist)
• the light properties worksheet (notes table + scenarios + claim-evidence-reasoning scaffold)
• Laptops for all students
• Mentimeter (interactive quiz mode)
• YouTube Studio access on student devices (teacher-approved settings)
• Headphones (recommended for recording clarity)
• Markers/coloured pens for revising notes
• Timer for video planning/recording

Assessment

• Formative: Mentimeter responses during steps 1, 3, and 6 to identify misconceptions and adjust teaching.
• Formative: Teacher checks the claim-evidence-reasoning scaffold on the light properties worksheet for accuracy and use of terminology.
• Summative (informal within lesson): Video quality using a short checklist embedded in the introduction slides—correct property, evidence link, and scientific language.
• Exit ticket: final Mentimeter item to confirm conceptual understanding.

Differentiation

• Support: Provide sentence starters on the light properties worksheet (e.g. “The light is absorbed because…”, “This shows reflection since…” “My evidence is…”).
• Support: Offer a terminology bank with small prompts (incident ray, normal, reflected ray; absorbed/scattered keywords) on the worksheet; allow students to copy key phrases into their video script.
• Extension: Challenge students to include one application where the property is used (e.g. anti-glare coatings, safety reflectors, lenses, satellite imaging) and justify why that property is beneficial.
• EAL/SEN: Permit students to use captions in video and rehearse using a storyboard template; group roles (script reader, evidence checker, recorder) to reduce cognitive load.
• Reliability: Ensure all groups use the same scenario evidence from the worksheet; remind students to avoid making claims not supported by the scenario evidence.