Anaerobic Respiration: Watching Yeast 'Breathe' Without Air
Watch a balloon inflate itself as yeast respires without oxygen. A required practical for comparing anaerobic and aerobic respiration.
Watch a balloon inflate itself as yeast respires without oxygen. A required practical for comparing anaerobic and aerobic respiration.
Watch invisible waves become visible in a bowl of water. A hands-on way to measure frequency, wavelength and wave speed for the exam.
Drop a stone and an apple in water: one sinks, one floats. A required practical for measuring mass, volume and density of regular solids, irregular solids and liquids using kitchen scales and a measuring jug.

New government research links how much pupils feel they belong at school to their GCSE results, with a gap of a full grade between those who do and those who don't. SEND, disadvantaged, and female students report the lowest ratings.
