Title | Description | Thumbnail Image | Curriculum Topics |
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## Construction Site Math: Ratios |
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## DescriptionIn this real-world application of ratios, students will learn what a ratio is, including ratios with three terms. They will see different ways of writing ratios, including fractions in simplest form. |
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## Algebra Application: Why Are Receipts So Long? |
In this Algebra Application, students gather data to study the lengths of paper receipts. They also learn to estimate the total number of receipts produced worldwide using industry data. From this they can study the environmental impact of having to produce so many paper receipts. The math topics covered include: |
Laws of Exponents, Data Analysis | |

## Algebra Application: Why Are Wildfires So Dangerous? |
In this Algebra Application, students learn about wildfires and the measurement of air quality. The math topics covered include: Scientific notation |
Laws of Exponents, Applications of Ratios, Proportions, and Percents | |

## VIDEO: Algebra Applications: Variables and Equations, Segment 3: River Ratios. |
Why do rivers meander instead of traveling in a straight line? In going from point A to point B, why should a river take the circuitous route it does instead of a direct path? Furthermore, what information can the ratio of the river’s length to its straight-line distance tell us? In this segment the geological forces that account for a river’s motion are explained. |
Applications of Equations and Inequalities, Variables and Unknowns, Variable Expressions | |

## VIDEO: Brief Review: Adding and Subtracting Rational Numbers |
In this Brief Review, the addition and subtraction of rational numbers is explored. Note: The download is an MP4 file. |
Numerical Expressions | |

## VIDEO: Brief Review: Applications of Rational Numbers |
In this Brief Review, applications of rational numbers are explored. Note: The download is an MP4 file. |
Numerical Expressions | |

## VIDEO: Brief Review: Dividing Rational Numbers |
In this Brief Review, division of rational numbers is explored. Note: The download is an MP4 file. |
Numerical Expressions | |

## VIDEO: Brief Review: Multiplying Rational Numbers |
In this Brief Review, multiplying rational numbers is explored. Note: The download is an MP4 file. |
Numerical Expressions | |

## VIDEO: Brief Review: What Is a Rational Number? |
In this Brief Review, rational numbers are defined. Note: The download is an MP4 file. |
Numerical Expressions | |

## Closed Captioned Video: Algebra Applications: Variables and Equations, Segment 3: River Ratios |
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## DescriptionWhy do rivers meander instead of traveling in a straight line? In going from point A to point B, why should a river take the circuitous route it does instead of a direct path? Furthermore, what information can the ratio of the river’s length to its straight-line distance tell us? |
Applications of Equations and Inequalities, Variables and Unknowns, Variable Expressions | |

## Closed Captioned Video: Percents: Fraction-Percent Conversion |
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## DescriptionVideo Tutorial: Ratios: Fraction-Percent Conversion. In this video learn how to convert percents to fractions to simplify percent operations. |
Percents | |

## Closed Captioned Video: Rational Numbers: Adding Rational Numbers |
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## DescriptionVideo Tutorial: Rational Numbers: Adding Rational Numbers. In this video students learn to add rational numbers. |
Rational Expressions | |

## Closed Captioned Video: Rational Numbers: Comparing and Ordering Rational Numbers |
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## DescriptionVideo Tutorial: Rational Numbers: Comparing and Ordering Rational Numbers. In this video students learn how to compare and order rational numbers using various techniques. |
Rational Expressions | |

## Closed Captioned Video: Rational Numbers: Dividing Rational Numbers |
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## DescriptionVideo Tutorial: Rational Numbers: Dividing Rational Numbers. In this video students learn to divide rational numbers. A Video Transcript is available for this tutorial. |
Rational Expressions | |

## Closed Captioned Video: Rational Numbers: Multiplying Rational Numbers |
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## DescriptionVideo Tutorial: Rational Numbers: Multiplying Rational Numbers. In this video, students learn to multiply rational numbers. |
Rational Expressions | |

## Closed Captioned Video: Rational Numbers: Numerical Expressions with Rational Numbers |
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## DescriptionVideo Tutorial: Rational Numbers: Numerical Expressions with Rational Numbers. In this video, students simplify various numerical expressions that use rational numbers. |
Rational Expressions | |

## Closed Captioned Video: Rational Numbers: Rational Numbers and Absolute Value |
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## DescriptionVideo Tutorial: Rational Numbers: Rational Numbers and Absolute Value. In this video, students continue their exploration of rational numbers by investigating absolute value. |
Rational Expressions | |

## Closed Captioned Video: Rational Numbers: Rational Numbers and Exponents |
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## DescriptionVideo Tutorial: Rational Numbers: Rational Numbers and Exponents. In this video, students explore the use of rational numbers as exponents with different expressions. A Video Transcript is available for this tutorial. |
Rational Expressions | |

## Closed Captioned Video: Rational Numbers: Rational Numbers and Irrational Numbers |
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## DescriptionVideo Tutorial: Rational Numbers: Rational Numbers and Irrational Numbers. In this video, students learn to distinguish rational numbers from irrational numbers. |
Rational Expressions | |

## Closed Captioned Video: Rational Numbers: Rational Numbers on a Number Line |
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## DescriptionVideo Tutorial: Rational Numbers: Rational Numbers on a Number Line. In this video, students explore rational numbers on a number line. |
Rational Expressions | |

## Closed Captioned Video: Rational Numbers: Rational Numbers on the Cartesian Coordinate System |
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## DescriptionVideo Tutorial: Rational Numbers: Rational Numbers on the Cartesian Coordinate System. In this video, students learn to graph rational-number-based coordinates on a Cartesian Coordinate plane. |
Rational Expressions | |

## Closed Captioned Video: Rational Numbers: Subtracting Rational Numbers |
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## DescriptionVideo Tutorial: Rational Numbers: Subtracting Rational Numbers. In this video, students learn to subtract rational numbers. |
Rational Expressions | |

## Closed Captioned Video: Rational Numbers: Variable Expressions with Rational Numbers |
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## DescriptionVideo Tutorial: Rational Numbers: Variable Expressions with Rational Numbers. In this video, students simplify various variable expressions that use rational numbers. |
Rational Expressions | |

## Closed Captioned Video: Rational Numbers: What Are Rational Numbers? |
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## DescriptionVideo Tutorial: Rational Numbers: What Are Rational Numbers? In this video, students learn the basic definition of rational numbers and look at real-world applications of them. |
Rational Expressions | |

## Closed Captioned Video: Ratios and Proportions: Scale Drawings |
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## DescriptionVideo Tutorial: Ratios and Proportions: Scale Drawings. In this video, we look at the properties of similar figures and use proportions to find lengths of corresponding sides. |
Ratios and Rates |