Choose your level, then a unit. Every answer is followed by an explanation.
Every step makes you stronger. Start with a quiz to find out what you already know, go deeper with the practice book, then master every method with the worked-solution pack. From quiz to book to pack, you gain more skill in each topic.
Every unit has two parts. Part A covers every key idea; Part B has harder, multi-step questions and exam-level reasoning. Each answer is followed by an explanation, and the questions and answer order change each time you start a unit.
Introduction to biology, classification, flowering plants, microscopes, cells, nutrition, gas exchange, tropisms, skeletons, diseases, health, reproduction
Animal classification, ecology, cell membrane transport, food tests, enzymes, photosynthesis, plant transport, gas exchange, excretion, joints, immunity, sexual health
Ecosystems, population, nutrient cycles, conservation, mitosis and meiosis, heterotrophic nutrition, circulation, respiration, coordination, sense organs, reproduction, genetics, variation
Biodiversity, classification, microscopy, cells and tissues, chemical basis of life, enzymes, growth, support and locomotion, diseases, plant reproduction, microbiology and biotechnology
Interdependence, membrane transport, DNA replication, cell division, protein synthesis, photosynthesis, plant transport, gas exchange, excretion, behaviour, immunity, genetics and mutation
Ecosystems, populations, circulation, respiration, receptors, nervous and hormonal coordination, human reproduction, muscle and movement, gene technology, variation, evolution