Casio ClassWiz CW Tutorial: Equivalent and Unit Ratios

Learn how to calculate equivalent ratios and express ratios in the form 1:n using ClassWiz scientific calculators. This step-by-step tutorial demonstrates the calculator methods used to simplify ratios, generate equivalent ratios, and convert values into standard ratio forms, helping students develop a stronger understanding of proportional reasoning and numerical relationships. The video provides practical techniques that can be applied to a wide range of GCSE mathematics questions involving ratio, proportion, and scaling. Designed for GCSE Mathematics students, the tutorial supports the development of essential number skills required for classroom learning, homework, revision, and examinations. By using calculator tools to work with ratios more efficiently, students can improve accuracy, reduce calculation errors, and gain confidence when solving multi-step ratio problems. Understanding how to express ratios in the form 1:n is particularly useful when comparing quantities, interpreting real-world data, and tackling exam-style questions. The procedures are demonstrated on the fx-83GTCW, fx-85GTCW, although similar techniques are also relevant to all the CW+ models including the fx-991CW+ UK.