Title | Description | Thumbnail Image | Curriculum Topics |
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## Why Do Rivers Meander? |
## DescriptionRivers twist and turn as they make their way to the sea. Why does this happen and how can this be explained mathematically? In this module we look at the geometry of meandering rivers. In the process we'll discover some fascinating numerical relationships. |
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## VIDEO: Algebra Applications: Data Analysis, Segment 4: What is an Adjustable Rate Mortgage? |
Another factor in the mortgage crisis was the use of adjustable rate mortgages. Students run a number of scenarios to test adjustable rate mortgages, while also taking into account the state of the housing market during the time of the mortgage crisis. |
Data Analysis, Data Gathering | |

## 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 | |

## Closed Captioned Video: Algebra Applications: Data Analysis, Segment 4: What is an Adjustable Rate Mortgage? |
## DescriptionAnother factor in the mortgage crisis was the use of adjustable rate mortgages. Students run a number of scenarios to test adjustable rate mortgages, while also taking into account the state of the housing market during the time of the mortgage crisis. A Video Transcript is available for this tutorial. |
Data Analysis, Data Gathering | |

## Closed Captioned Video: Algebra Applications: Variables and Equations, Segment 3: River Ratios |
## 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 |
## DescriptionVideo 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. Note: The download is Media4Math's guide to closed captioned videos. |
Percents | |

## Closed Captioned Video: Ratios and Proportions: Scale Drawings |
## 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. A Video Transcript is available for this tutorial. Note: The download is Media4Math's guide to closed captioned videos. |
Ratios and Rates | |

## Closed Captioned Video: Ratios and Proportions: Solving Proportions |
## DescriptionVideo Tutorial: Ratios and Proportions: Solving Proportions. In this video, we solve proportion problems algebraically. A Video Transcript is available for this tutorial. Note: The download is Media4Math's guide to closed captioned videos. |
Ratios and Rates | |

## Closed Captioned Video: Ratios and Proportions: What Are Proportions? |
## DescriptionVideo 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. Note: The download is Media4Math's guide to closed captioned videos. |
Ratios and Rates | |

## Closed Captioned Video: Ratios and Rates: Converting Measurement Units |
## DescriptionVideo 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. A Video Transcript is available for this tutorial. |
Ratios and Rates | |

## Closed Captioned Video: Ratios and Rates: Rates and Slopes of Lines |
## DescriptionVideo 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. A Video Transcript is available for this tutorial. |
Ratios and Rates | |

## Closed Captioned Video: Ratios and Rates: Rates from Data |
## DescriptionVideo 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. Note: The download is Media4Math's guide to closed captioned videos. |
Ratios and Rates | |

## Closed Captioned Video: Ratios and Rates: Ratios as Decimals |
## DescriptionVideo 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. A Video Transcript is available for this tutorial. |
Ratios and Rates | |

## Closed Captioned Video: Ratios, Proportions, and Percents: Calculating Percents |
## DescriptionVideo 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. A Video Transcript is available for this tutorial. |
Ratios and Rates | |

## Closed Captioned Video: Ratios: Application of Ratios: Roofs and Ramps |
## DescriptionIn 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. A Video Transcript is available for this tutorial. Note: The download is Media4Math's guide to closed captioned videos. |
Ratios and Rates | |

## Closed Captioned Video: Ratios: Equivalent Ratios |
## DescriptionVideo 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. Note: The download is Media4Math's guide to closed captioned videos. |
Ratios and Rates | |

## Closed Captioned Video: Ratios: Fractional Ratios |
## DescriptionVideo 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. A Video Transcript is available for this tutorial. |
Ratios and Rates | |

## Closed Captioned Video: Ratios: Rates |
## DescriptionVideo Tutorial: Ratios: Rates. In this video we look at rates. A Video Transcript is available for this tutorial. Note: The download is Media4Math's guide to closed captioned videos. |
Ratios and Rates | |

## Closed Captioned Video: Ratios: Ratios and Fractions |
## DescriptionVideo 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. |
Ratios and Rates | |

## Closed Captioned Video: Ratios: Ratios with Three Items |
## DescriptionVideo 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. Note: The download is Media4Math's guide to closed captioned videos. |
Ratios and Rates | |

## Closed Captioned Video: Ratios: Unit Rates |
## DescriptionVideo Tutorial: Ratios: Unit Rates. In this video we look at unit rates. A Video Transcript is available for this tutorial. Note: The download is Media4Math's guide to closed captioned videos. |
Ratios and Rates | |

## Closed Captioned Video: Ratios: Visual Models for Ratios |
## DescriptionVideo 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. Note: The download is Media4Math's guide to closed captioned videos. |
Ratios and Rates | |

## Closed Captioned Video: Ratios: Visual Models for Ratios and Percents |
## DescriptionVideo 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. A Video Transcript is available for this tutorial. |
Ratios and Rates | |

## Closed Captioned Video: Ratios: What Are Ratios? |
## DescriptionVideo 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. Note: The download is Media4Math's guide to closed captioned videos. |
Ratios and Rates | |

## INSTRUCTIONAL RESOURCE: Pumpkin PI |
In this Slide Show, do a hands-on geometry activity to measure π. Note: The download is a PPT file. |
Ratios and Rates |