Simplifying Ratios

The start of the lesson is used to review matching simple proportions with their corresponding diagrams.  The development phase builds on this by introducing ratios using diagrams.  As learning progresses students begin to simplify a ratio by calculating the highest common factor.  The plenary consolidates the learning by matching up equivalent ratios to find the odd one out.
Differentiated Learning Objectives
• All students should be able to simplify a ratio using common factors.
• Most students should be able to fully simplify a ratio using the highest common factor.
• Some students should be able to calculate equivalent ratios involving multiple different units.
Related Blog
SKU: 184

Mr Mathematics Blog

Reflective Symmetry in 2D Shapes

Key Stage 3 lesson on identifying lines of reflective symmetry in 2D shapes.

Equation of Parallel and Perpendicular Lines

How to find the equation of parallel and perpendicular straight line graphs at A-Level.

Gradient and Midpoint of Line Segments

AS Mathematics – How to work out the gradient and midpoint of line segments.