A student workbook with magnification questions along with an accompanying teacher PowerPoint which explains how to solve the questions. The resource goes through several calculations where the magnification (M) of an object can be calculated if both the size of the image (I), and the actual size of the specimen (A), is known. The size of cells and organelles are measured using the micrometre (μm) scale.

A complete set of crosswords with answers that follow the OCR Biology AS and A Level specification A. A free sample of one of the crosswords and answers is available here: https://www.tes.com/teaching-resource/-12939443 This resource contains 24 separate crosswords which cover all modules in the specification. The answers to each crossword are also provided. Topics covered: Cell Structure Biological Molecules 1 Biological Molecules 2 – Nucleic Acids Enzymes Plasma Membranes Cell Division Exchange surfaces Transport in Animals Transport in Plants Classification and Evolution Biodiversity Communicable Diseases The Nervous System Homeostasis Plant Responses Energy for Biological Processes Respiration Genetics of Living Systems Inheritance Manipulating Genomes Cloning and Biotechnology Ecosystems Populations and Sustainability Practical Skills Great for helping your students to recall and use the subject specific vocabulary by thinking of a concept or meaning and retrieving the correct word. A form of retrieval practice which is essential for fixing new words into long-term memory and helping to remember the words in new situations.