Subunit A1: The Real Numbers

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Last Modified :  February 14, 2011

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Subunit A1: The Real Numbers



In this lesson you will learn about different types of numbers and how to use a number line to compare numbers and to find distances. Additionally, you will learn about mathematical definitions and notations associated with Sets, Number Comparison, Absolute Value, Multiplication, and Exponents.


The only activity required for Diploma Credit is the completion of the Lesson Evaluation with a score of at least 70%. It is up to you to decide which of the Optional Activities listed below you need to complete to prepare for the Evaluation. However, it is STRONGLY RECOMMENDED  that you at least complete the lesson Practice Evaluation. 


TEXT: Academic Systems Algebra - Elementary Algebra (PAN)

o READING: Pages 61 – 70

o PRACTICE PROBLEMS: 1 - 11 odd on page 73 and 1 - 23 odd on pages 74 - 75.

o ONLINE LEARNING ACTIVITIES: Many students find the PLATO (or BuzMath, where available) online activities to be a good place to get started on a given lesson, since …

▫ The PLATO Tutorials (or BuzMath Discussions/Demonstrations [where available]) generally present a good introduction to the critical concepts and skills.

▫ The PLATO Applications (or BuzMath Guided Practices & Independent Practices [where available]) provide a fair amount of reinforcement and practice.

▫ And the BuzMath Self Checks [where available] are a good measure of how well you have learned the material and what things you still need to work on, if any.

You are STRONGLY ENCOURAGED to take advantage of these online resources; however, they are not required. The main thing is that you be able to demonstrate that you have learned the required concepts and skills by passing a written Cumulative Evaluation with at least 70%.

o LESSON REVIEW: Complete the Subunit A1 Practice Evaluation(s)

Comparison Symbols
The Number Line
Absolute Value
Lesson Summary





Inactive buttons beneath: These online lessons are currently under development.

Subunit A1: Lesson 1.1 (The Real Numbers) -- Overview