Inclusive SEND science lesson on Relative Formula Mass for Key Stage 4 – one lesson with three pathways for PMLD, SLD / MLD and dyslexic GCSE learners. 45 slides at 28 pt, answers on click, worksheets with answers and 19 pages of print-ready cards. How heavy is a water molecule? An inclusive KS4 lesson on relative atomic mass and relative formula mass for special schools 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 heavy and light balls, a balance and a big-button calculator. Includes an Engagement Model observation record for the adult to complete.
• Build (SLD / MLD, low reading age, EAL): match pictures to words, match molecules to their Mr and add up the mass of water – by sticking, pointing, signing or writing.
• Explain (GCSE, dyslexia-friendly): calculate Mr including brackets and percentage by mass, and answer an exam question.

What’s included

• 45-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: building molecules and adding up Ar cards
• 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
• 19-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, number and answer 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: Ar (atom mass), Mr (formula mass), formula, small number, add, multiply, periodic table, % by mass

Curriculum

• National Curriculum Key Stage 4 Science (Chemistry): quantitative chemistry: conservation of mass, moles and concentrations
• AQA GCSE Chemistry 8462 / Combined Science Trilogy 8464 – 4.3.1.2 Relative formula mass

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 chemistry, GCSE chemistry, relative formula mass, relative atomic mass, Mr, percentage by mass, visual timetable, communication cards, Engagement Model