Why Do Leaves Change Colour? | Year 4 Science PowerPoint Lesson

Turn autumn walks into science with this visual, colourful, interactive PowerPoint for Year 4. Pupils discover that leaves are green because of chlorophyll, that the yellows and oranges were hiding all along, and why trees drop their leaves in winter. Key vocabulary such as pigment, chlorophyll, photosynthesis, deciduous and evergreen is introduced gently and repeated, and the myth that frost paints the leaves is tackled head on. Two hands-on activities, a leaf sort, tally and bar chart and a chromatography investigation with a safe felt-tip practice version, build real working scientifically skills such as predicting, fair testing, recording and explaining with evidence. Supports the KS2 science programme of study and ends with a where-this-leads-next slide. Ready-to-teach and no-prep, it is ideal for non-specialist teachers, autumn topic weeks and cover lessons. 16 slides with friendly speech-bubble prompts. Stretch questions invite pupils to explain why different leaves look different. British spelling throughout. Download once and use every year.