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# TIMES Module 18: Number and Algebra: decimals and percentages - teacher guide

TLF ID M008606

This is a 21-page guide for teachers containing an introduction to decimals and percentages. It shows how place value is extended to describe positive numbers less than one. It also explores how to represent decimals on the number line, compare decimals, undertake the four basic arithmetic operations with decimals and change vulgar fractions to decimals and vice versa. The notation of percentages is introduced. A history of the development of decimals concludes the module.

#### Educational details

Educational value
• The modules are written for teachers. They provide the mathematical background, together with other resources, to enable the teacher to plan the development of topics in their classrooms. This module relates to many other modules in both Number and Algebra and Measurement and Geometry. Particularly important are Module 5: Number and Algebra: using place value to write numbers - teacher guide and Module 10: Measurement and Geometry: introduction to measurement - teacher guide.
Year level

5; 6; 7; 8

Learning area
• Mathematics

#### Other details

Contributors
• Contributor
• Name: Education Services Australia
• Organization: Education Services Australia
• Description: Data manager
• URL: http://www.esa.edu.au/
• Name: Australian Mathematical Sciences Institute
• Organization: Australian Mathematical Sciences Institute
• URL: http://www.amsi.org.au/
• Publisher
• Name: Education Services Australia Ltd
• Organization: Education Services Australia Ltd
• Description: Publisher
• URL: http://www.esa.edu.au/
• Name: Australian Mathematical Sciences Institute
• Organization: Australian Mathematical Sciences Institute
• Description: Publisher