In this lesson on rational numbers, students will learn how to solve real-life problems involving rational numbers.

Given a, b, and c shown on the number line, Sal determines if statements like -b < c are true. [4:54]

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Students add and subtract plays on a football field to practice working with negative and positive integers on the number line.

In this interactive, students add and subtract plays on a football field to practice working with negative and positive integers on the number line. Each set of randomized drives consists of seven to nine plays and ends with a touchdown. Plays are represented with equations. When students place the football at the correct point for each play, the answer to the corresponding equation is automatically filled in. The accompanying activity suggests ways that teachers can integrate the interactive into the classroom setting.

This task has students experiment with the operations of addition and multiplication, as they relate to the notions of rationality and irrationality.

Play a fast-paced video game that involves finding rational numbers on the number line. This game from Math Snacks focuses on using what you know about positive and negative numbers and fractions to place them correctly on the variable number line and retrieve pearls.

Students review the definition of rational numbers as ratios and as terminating and repeating decimals. They also examine the reciprocal property of rational numbers and operations with rational numbers.

This task makes for a good follow-up task on rational irrational numbers after that the students have been acquainted with some of the more basic properties. In addition to eliciting several different types of reasoning, the task requires students to rewrite radical expressions in which the radicand is divisible by a perfect square (N-RN.2).

The scope of this video lesson consists in studying the sets of Rational and Irrational numbers. The main objectives for the students are: 1) Learning how to distinguish between a rational number and an irrational number; 2) Learning about the existence of 2 infinities: the "countable infinity" for sets of Rational numbers and the "uncountable infinity" for the set of irrational numbers; and 3) Learning to use straightforward and advanced tools from Mathematics to reach goals (1) and (2). [43:13]

Linear inequalities can be represented both graphically and algebraically. In this video, you will learn how to express linear inequalities as an equation and on a number line. [8:15]

This video walks you through the four main steps when multiplying fractions with whole numbers. Includes explanations, examples and practice problems. [1:00]

Numbers can be categorized more specifically into different number systems, for instances, natural numbers, whole numbers, integers, rational numbers, and irrational numbers. In this video, you will learn how to classify numbers into different number systems. [3:47]

Find a quick, concise explanation of Real Numbers. Other number systems are also defined such as: Natural, Integer, Rational, Irrational and Complex Numbers.

Find a quick, concise explanation of rational numbers. Examples are given and clearly explained.

This tutorial shows you how to find rational numbers between two rational numbers. [3:24]

This site gives an overview of rational numbers, gives interesting facts about the rational numbers including countability and probability of a rational numbers denominator being even. The site also contains related links.