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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## Closed Captioned Video: Algebra Applications: Data Analysis, 4 |
## Closed Captioned 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. |
Data Analysis, Data Gathering | |

## Closed Captioned Video: Algebra Applications: Variables and Equations, 3 |
## Closed Captioned Video: Algebra Applications: Variables and Equations, Segment 3: River RatiosWhy 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? |
Applications of Equations and Inequalities, Variables and Unknowns, Variable Expressions | |

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

## Closed Captioned Video: Ratios and Proportions: Scale Drawings |
## Closed Captioned Video: Ratios and Proportions: Scale DrawingsVideo 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 | |

## Closed Captioned Video: Ratios and Proportions: Solving Proportions |
## Closed Captioned Video: Ratios and Proportions: Solving ProportionsVideo Tutorial: Ratios and Proportions: Solving Proportions. In this video, we solve proportion problems algebraically. |
Ratios and Rates | |

## Closed Captioned Video: Ratios and Proportions: What Are Proportions? |
## Closed Captioned Video: Ratios and Proportions: What Are Proportions?Video Tutorial: Ratios and Proportions: What are Proportions?. In this video, we solve proportion problems using equivalent ratios. |
Ratios and Rates | |

## Closed Captioned Video: Ratios and Rates: Converting Measurement Units |
## Closed Captioned Video: Ratios and Rates: Converting Measurement UnitsVideo 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 | |

## Closed Captioned Video: Ratios and Rates: Rates and Slopes of Lines |
## Closed Captioned Video: Ratios and Rates: Rates and Slopes of LinesVideo 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 | |

## Closed Captioned Video: Ratios and Rates: Rates from Data |
## Closed Captioned Video: Ratios and Rates: Rates from DataVideo 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. |
Ratios and Rates | |

## Closed Captioned Video: Ratios and Rates: Ratios as Decimals |
## Closed Captioned Video: Ratios and Rates: Ratios as DecimalsVideo 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 | |

## Closed Captioned Video: Ratios, Proportions, and Percents: Calculating Percents |
## Closed Captioned Video: Ratios, Proportions, and Percents: Calculating PercentsVideo 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 | |

## Closed Captioned Video: Ratios: Application of Ratios: Roofs and Ramps |
## Closed Captioned Video: Ratios: Application of Ratios: Roofs and Ramps |
Ratios and Rates | |

## Closed Captioned Video: Ratios: Equivalent Ratios |
## Closed Captioned Video: Ratios: Equivalent Ratios |
Ratios and Rates | |

## Closed Captioned Video: Ratios: Fractional Ratios |
## Closed Captioned Video: Ratios: Fractional Ratios |
Ratios and Rates | |

## Closed Captioned Video: Ratios: Rates |
## Closed Captioned Video: Ratios: Rates |
Ratios and Rates | |

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

## Closed Captioned Video: Ratios: Ratios with Three Items |
## Closed Captioned Video: Ratios: Ratios with Three Items |
Ratios and Rates | |

## Closed Captioned Video: Ratios: Unit Rates |
## Closed Captioned Video: Ratios: Unit Rates |
Ratios and Rates | |

## Closed Captioned Video: Ratios: Visual Models for Ratios |
## Closed Captioned Video: Ratios: Visual Models for Ratios |
Ratios and Rates | |

## Closed Captioned Video: Ratios: Visual Models for Ratios and Percents |
## Closed Captioned Video: Ratios: Visual Models for Ratios and Percents |
Ratios and Rates | |

## Closed Captioned Video: Ratios: What Are Ratios? |
## Closed Captioned Video: Ratios: What Are Ratios? |
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 | |

## Math Example--Ratios and Rates--Example 1 |
## Math Example--Ratios and Rates--Example 1This is part of a collection of math examples that focus on ratios and rates. |
Ratios and Rates | |

## Math Example--Ratios and Rates--Example 10 |
## Math Example--Ratios and Rates--Example 10This is part of a collection of math examples that focus on ratios and rates. |
Ratios and Rates |