Direct Proportion and Exchange Rates

Direct Proportion and Exchange Rates
Direct Proportion and Exchange Rates
Direct Proportion and Exchange Rates

What's Included

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

Direct Proportion and Exchange Rates

Using equivalent ratios and the unitary method students learn how to calculate amounts that are in direct proportion, such as exchange rates and cooking recipes.  During the lesson students progress from working proportions in the form 1 : n to finding conversion factors from a real-life graph.The start of the lesson recaps working with equivalent ratios through mile to km conversions.  The plenary challenges students to perform calculations using a conversion graph.
Differentiated Learning Objectives
  • All students should be able to calculate proportionate amounts in the form 1 : n.
  • Most students should be able to calculate proportionate amounts using equivalent ratios.
  • Some students should be able to solve problems involving equivalent ratios in context.
Lesson Downloads
Download Lesson Plan Download PowerPoint Download Notebook Download Flipchart Download Worksheet
Scheme of Work Link
Ratio, Proportion and Rates of Change SoW
IMMEDIATE DOWNLOAD

Mr Mathematics Blog

How to Simplify Surds

When learning how to simplify surds students need to understand the difference between a rational and irrational number. Rational numbers include integers and terminating and repeating decimals. They can be written as a fraction with both the numerator and denominator as integers. An irrational number is a number which, in its decimal form does not […]

Sharing an Amount to a Given Ratio

There are three common methods for sharing an amount to a given ratio.  Depending on the age group and ability range I am teaching I would choose one approach over the other two. The three methods are: Using fractions Unitary method Using a table In this blog I will demonstrate each of the three methods […]

Plotting Scatter Graphs and Understanding Correlation

To introduce plotting scatter graphs and understanding correlation I ask students to think about the relationships between different variables and to describe how they might be related. Here’s my starter activity which students discuss in pairs then present to me on mini-whiteboards. When the students have had time to discuss the matching pairs we talk […]