# Writing Ratios in their Simplest Form

#### What's Included

• Smart Notebooks Presentation
• Activ Inspire Flipchart
• Lesson Plan
• Microsoft PowerPoint Presentation
• Differentiated Worksheet

# Writing Ratios in their Simplest Form

Key stage 3 lesson where students learn about writing ratios in their simplest form using the highest common factor.  As learning progresses students work with ratios involving time, metric units and currency notation.

The start of the lesson recaps scale drawings.  The plenary challenges students to link area with simplifying ratios.

##### Differentiated Learning Objectives
• All students should be able to write a ratio in a simpler form using a common factor.
• Most students should be able to write a ratio in its simplest form using the highest common factor.
• Some students should be able to use equivalent ratios to solve problems involving currency.
Ratio, Proportion and Rates of Change

### Mr Mathematics Blog

#### Surface Area of Cylinders

When I teach how to find the surface area of cylinders I like to add a constant level of challenge and enjoyment to the lesson.  Rather than repetitively calculating the surface area of a cylinder I introduce more complex cylindrical shapes. How to find the Surface Area of Cylinders To find the surface area of […]

#### Teaching Mathematics for a Growth Mindset

Inspiring students to enjoy maths and feel the success that comes with attempting a difficult challenge is why I teach.  The feeling of success is addictive.  The more students experience it the more they want it and the further out of their comfort zone they are willing to go to get more of it.  Teaching […]

#### Equation of Straight Line Graphs

To find the equation of straight line graphs students need to calculate the gradient using two pairs of coordinates and the intercept which is the y value of where it crosses the vertical axis.  Examiner’s reports of past exam questions show students are more able to find the intercept of a straight line than they […]