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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## 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 Tutorial: Ratios: What Are Ratios? |
Video Tutorial: Ratios: What Are Ratios? In this video, students learn what a ratio is and look at examples of different types of ratios. A Video Transcript is available for this tutorial at this link: Note: The download is an MP4 file. |
Ratios and Rates | |

## Video Tutorial: Ratios: Ratios with Three Items |
Video Tutorial: Ratios: Ratios with Three Items. In this video, students look at ratios of the form a:b:c. Analyze pairs of ratios and see how they can be combined into one ratio. A Video Transcript is available for this tutorial at this link: |
Ratios and Rates | |

## Video Tutorial: Ratios: Fractional Ratios |
Video Tutorial: Ratios: Fractional Ratios. In this video look at ratios of the form a:b and a:b:c, where the terms in the ratio are fractions. Techniques are shown for converting fractional ratios to whole number ratios. |
Ratios and Rates | |

## Video Tutorial: Ratios: Ratios and Fractions |
Video Tutorial: Ratios: Ratios and Fractions. In this video, students look at at the similarities and differences between ratios and fractions. We also show how to derive fractional relationships from ratios. A Video Transcript is available for this tutorial at this link: |
Ratios and Rates | |

## Video Tutorial: Ratios: Visual Models for Ratios |
Video Tutorial: Ratios: Visual Models for Ratios. In this video, we look at different visual models for solving ratio problems. A Video Transcript is available for this tutorial at this link: Note: The download is an MP4 file. |
Ratios and Rates | |

## Video Tutorial: Ratios: Numerical Models for Ratios |
Video Tutorial: Ratios: Numerical Models for Ratios. In this video, we look at different numerical models for solving ratio problems. A Video Transcript is available for this tutorial at this link: Note: The download is an MP4 file. |
Ratios and Rates | |

## Video Tutorial: Ratios: Equivalent Ratios |
Video Tutorial: Ratios: Equivalent Ratios. In this video we look at equivalent ratios and solve problems that involve the use of equivalent ratios A Video Transcript is available for this tutorial at this link: Note: The download is an MP4 file. |
Ratios and Rates | |

## Video Tutorial: Ratios: Rates |
Video Tutorial: Ratios: Rates. In this video we look at rates. A Video Transcript is available for this tutorial at this link: Note: The download is an MP4 file. |
Ratios and Rates | |

## Video Tutorial: Ratios: Unit Rates |
Video Tutorial: Ratios: Unit Rates. In this video we look at unit rates. A Video Transcript is available for this tutorial at this link: Note: The download is an MP4 file. |
Ratios and Rates | |

## Video Tutorial: Ratios and Proportions: What are Proportions? |
Video Tutorial: Ratios and Proportions: What are Proportions?. In this video, we solve proportion problems using equivalent ratios. A Video Transcript is available for this tutorial at this link: Note: The download is an MP4 file. |
Ratios and Rates | |

## Video Tutorial: Ratios and Proportions: Solving Proportions |
Video Tutorial: Ratios and Proportions: Solving Proportions. In this video, we solve proportion problems algebraically. A Video Transcript is available for this tutorial at this link: Note: The download is an MP4 file. |
Ratios and Rates | |

## Video Tutorial: Ratios and Proportions: Scale Drawings |
Video 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. A Video Transcript is available for this tutorial at this link: |
Ratios and Rates | |

## Video Tutorial: Ratios and Rates: Rates from Data |
Video Tutorial: Ratios and Rates: Rates from Data. In this video, we look at linear data sets that can be used to find the rate of change. A Video Transcript is available for this tutorial at this link: Note: The download is an MP4 file. |
Ratios and Rates | |

## Video Tutorial: Ratios and Rates: Rates and Slopes of Lines |
Video Tutorial: Ratios and Rates: Rates and Slopes of Lines. In this video we connect the concept of rate of change for a set of linear data to the concept of slope. We use the slope formula to find the rate of change. |
Ratios and Rates | |

## Video Tutorial: Ratios and Rates: Converting Measurement Units |
Video Tutorial: Ratios and Rates: Converting Measurement Units. In this video, we show how to use conversion rates to convert from one unit of measurement to another. Students are shown how to create a conversion rate. |
Ratios and Rates | |

## Video Tutorial: Ratios, Proportions, and Percents: Calculating Percents |
Video Tutorial: Ratios and Percents: Calculating Percents. In this video, students will see the relationship between ratios, proportions, and percents. A percent formula is derived and used to solve several real-world percent problems. |
Ratios and Rates | |

## Video Tutorial: Ratios: Visual Models for Ratios and Percents |
Video Tutorial: Visual Models for Ratios and Percents. In this video explore visual models for ratios and fractions that can be used as visual models for percents. Model different ratios and percents using visual models. Note: The download is an MP4 file. Related Resources |
Ratios and Rates | |

## Video Tutorial: Ratios and Rates: Ratios as Decimals |
Video Tutorial: Ratios and Rates: Ratios as Decimals. In this video, students explore ratios whose terms are decimals. Students are shown techniques for simplifying these types of ratios in ;the context of solving real-world ratio problems. |
Ratios and Rates | |

## Video Tutorial: Percents: Fraction-Percent Conversion |
Video Tutorial: Ratios: Fraction-Percent Conversion. In this video learn how to convert percents to fractions to simplify percent operations. A Video Transcript is available for this tutorial at this link: Note: The download is an MP4 file. |
Percents | |

## Video Tutorial: Ratios: Application of Ratios: Roofs and Ramps |
Video Tutorial: Application of Ratios: Roofs and Ramps. In this video, we explore the application of ratio concepts to the pitch of a roof and the slope of a ramp. Several real-world examples are explored. |
Applications of Ratios, Proportions, and Percents, Proportions | |

## Video Tutorial: Rational Numbers: What Are Rational Numbers? |
Video 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. A Video Transcript is available for this tutorial at this link: |
Rational Expressions | |

## Video Tutorial: Rational Numbers: Rational Numbers and Irrational Numbers |
Video Tutorial: Rational Numbers: Rational Numbers and Irrational Numbers. In this video, students learn to distinguish rational numbers from irrational numbers. A Video Transcript is available for this tutorial at this link: |
Rational Expressions | |

## Video Tutorial: Rational Numbers: Rational Numbers on a Number Line |
Video Tutorial: Rational Numbers: Rational Numbers on a Number Line. In this video, students explore rational numbers on a number line. A Video Transcript is available for this tutorial at this link: Note: The download is an MP4 file. |
Rational Expressions |