Inclusive SEND science lesson on Diffusion for Key Stage 4 – one lesson with three pathways for PMLD, SLD / MLD and dyslexic GCSE learners. 47 slides at 28 pt, answers on click, worksheets with answers and 18 pages of print-ready cards. How do particles spread out? A fully inclusive Key Stage 4 lesson on diffusion for special schools, resource bases and mixed-ability classes.

Everyone studies the same National Curriculum topic at the right level, so the whole class learns together.

Three pathways in one lesson

• Explore (PMLD / sensory learners): a sensory story with a spreading smell, a drop of colour in water and warm and cold cups. Includes an Engagement Model observation record for the adult to complete.
• Build (SLD / MLD, low reading age, EAL): match pictures to words, show which way particles move and answer true or not true – by sticking, pointing, signing or writing.
• Explain (GCSE, dyslexia-friendly): predict the direction of movement, define diffusion using concentration, explain what makes it faster and answer an exam question with sentence starters.

What’s included

• 47-slide editable PowerPoint – every word at least 28 pt, cream background, no italics, one idea per slide, a picture on every teaching slide and answers revealed one click at a time
• Visual timetable with Now / Next, feelings check-in, sensory starter, ‘I can’ objectives, key words with pictures, show-me checks, picture hinge question, exam question with mark scheme and plenary
• Multi-sensory practical: watch food colouring diffuse in cold and warm water
• 6-page worksheet pack (Word + PDF) in 14 pt with 1.5 line spacing: teacher guide, sensory story and engagement record, Build tasks, Explain tasks, cut-out cards and full answers
• 18-page Printable Cards and Resources pack (PDF) with cut lines: key-word picture cards, word cards, picture cards, matching cards, yes / not sure / no cards, A–D cards and direction cards, visual timetable cards, Now and Next board, feelings board, sorting mat, choice board and A4 posters
• Teaching-team notes: adult roles, resources, safety, misconceptions and Ofsted SEND links

Key words: particle, diffusion, concentration, high, low, spread out, membrane, surface area

Curriculum

• National Curriculum Key Stage 4 Science (Biology): cell biology
• AQA GCSE Biology 8461 / Combined Science Trilogy 8464 – 4.1.3.1 Diffusion

Ideal for special schools, SEND resource bases, intervention groups, alternative provision and mainstream classes that need adaptive teaching.

Keywords: SEND science, special needs science lesson, PMLD sensory story, SLD, MLD, dyslexia friendly, adaptive teaching, inclusive science, KS4 biology, GCSE biology, diffusion, concentration gradient, particles, cell membrane, transport in cells, visual timetable, communication cards, Engagement Model