Title | Description | Thumbnail Image | Curriculum Topics |
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Why Are Castles So Tall? |
In this module students explore indirect measurement by seeing how simple angle measure, height measurements, and tangent ratios can be used to calculate distances. The context of castles provides a historically relevant military purpose for the tallness of castles. This module explores Himeji Castle in Japan, as well as other castles. Some of the concepts explored in this module include:
This module provides a nice blend of algebra and geometry topics and can be used in an algebra unit on linear functions, a geometry unit on tangent ratios, or even a pre-calculus lesson on tangent ratios and functions. |
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Algebra Application: Linear Functions: Circumference vs. Diameter |
In this Algebra Application, students study the direction between diameter and circumference of a circle. Through measurement and data gathering students analyze the line of best fit and explore ways of calculating pi. The math topics covered include:
This is a great back-to-school activity for middle school or high school students. This is also a great crossover activity that ties algebra and geometry. Note: The download is a PDF file that includes the link to the GoogleDoc version. |
Applications of Linear Functions, Applications of Ratios, Proportions, and Percents, Applications of Circles | |
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:
The culminating activity is for students to make a persuasive case to retailers about finding alternatives to paper receipts, using the data they gathered and analyzed. This is a great back-to-school activity for middle school or high school students. A relevant real-world application allows them to review math concepts. Note: The download is a PDF file that includes the link to the GoogleDoc version. |
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:
The specific focus of this investigation is the health hazards from wildfire smoke. This includes a discussion of air density, measurement in microns, and measurement of air quality. Links to various web sites, including the EPA's site, provide relevant background information and data. The culminating activity is a case study of the wildfires in the Lake Tahoe area. Students analyze historical data and make a recommendation on the air quality. This is a great back-to-school activity for middle school or high school students. A relevant real-world application allows them to review math concepts. Note: The download is a PDF file that includes the link to the GoogleDoc version. |
Laws of Exponents, Applications of Ratios, Proportions, and Percents | |
Closed Captioned Video: Percents: Applications of Percent -- Grade |
Video Tutorial: Applications of Percent -- Grade. In this video we investigate the concept of the grade of a road. This is an application of percents, where the slope of a road or a ski slope is written in percent form. We interpret this percent measurement as a slope measurement. A Video Transcript is available for this tutorial at this Link Note: The download is Media4Math's guide to closed captioned videos. Other Closed Captioned VideosTo see the complete collection of Closed Captioned Videos, click on this Link |
Percents | |
Closed Captioned Video: Percents: Calculating Commissions and Tips |
Video Tutorial: Percents: Calculating Commissions and Tips. In this video we look at using percent formulas to calculate sales commissions and tips. Various real-world scenarios are investigated for calculating these percent-based amounts. A Video Transcript is available for this tutorial at this Link Note: The download is Media4Math's guide to closed captioned videos. Other Closed Captioned VideosTo see the complete collection of Closed Captioned Videos, click on this Link |
Percents | |
Closed Captioned Video: Percents: Calculating Tax |
Video Tutorial: Percents: Calculating Tax. In this video we look at using tax rates to calculate tax owed. The tax rates are written as percents and converted to decimals to calculate the tax. A Video Transcript is available for this tutorial at this Link Note: The download is Media4Math's guide to closed captioned videos. Other Closed Captioned VideosTo see the complete collection of Closed Captioned Videos, click on this Link |
Percents | |
Closed Captioned Video: Percents: Multiple Percents |
Video Tutorial: Percents: Multiple Percents. In this video, we investigate calculating the percent of a percent. Multiple calculations of a percent are investigated relative to a combined percent calculation. A Video Transcript is available for this tutorial at this Link Note: The download is Media4Math's guide to closed captioned videos. Other Closed Captioned VideosTo see the complete collection of Closed Captioned Videos, click on this Link |
Percents | |
Closed Captioned Video: Percents: Percent Decrease |
Video Tutorial: Percents: Percent Decrease. In this video, we look at the concept of percent decrease. The formula for calculating percent decrease is shown and used in the context of solving real-world problems. A Video Transcript is available for this tutorial at this Link Note: The download is Media4Math's guide to closed captioned videos. Other Closed Captioned VideosTo see the complete collection of Closed Captioned Videos, click on this Link |
Percents | |
Closed Captioned Video: Percents: Percent Increase |
Video Tutorial: Percents: Percent Increase. In this video, we look at the concept of percent increase. The formula for calculating percent increase is shown and used in the context of solving real-world problems. A Video Transcript is available for this tutorial at this Link Note: The download is Media4Math's guide to closed captioned videos. Other Closed Captioned VideosTo see the complete collection of Closed Captioned Videos, click on this Link |
Percents | |
Closed Captioned Video: Percents: Percents and Multiples of Numbers |
Video Tutorial: Percents: Percents and Multiples of Numbers. In this video, we explore the difference between percent growth and the multiple of a number. Several real-world examples are used to explore these differences. A Video Transcript is available for this tutorial at this Link Note: The download is Media4Math's guide to closed captioned videos. Other Closed Captioned VideosTo see the complete collection of Closed Captioned Videos, click on this Link |
Percents | |
Closed Captioned Video: Percents: Probabilities and Percents |
Video Tutorial: Percents: Probabilities and Percents. In this video, percent calculations are used to explore probabilities of events. From a percent-based probability predictions are made for given outcomes. A Video Transcript is available for this tutorial at this Link Note: The download is Media4Math's guide to closed captioned videos. Other Closed Captioned VideosTo see the complete collection of Closed Captioned Videos, click on this Link |
Percents | |
Closed Captioned Video: Percents: Simple Interest |
Video Tutorial: Percents: Simple Interest. In this video, we look at simple interest in the context of using percent to make calculations. A formula for calculating simple interest is shown and used to solve several real-world problems. A Video Transcript is available for this tutorial at this Link Note: The download is Media4Math's guide to closed captioned videos. Other Closed Captioned VideosTo see the complete collection of Closed Captioned Videos, click on this Link |
Percents | |
Closed Captioned Video: Ratios: 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. A Video Transcript is available for this tutorial at this Link Note: The download is Media4Math's guide to closed captioned videos. Other Closed Captioned VideosTo see the complete collection of Closed Captioned Videos, click on this Link |
Ratios and Rates | |
Closed Captioned Video: 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 Media4Math's guide to closed captioned videos. Other Closed Captioned VideosTo see the complete collection of Closed Captioned Videos, click on this Link |
Ratios and Rates | |
Definition--Ratios, Proportions, and Percents Concepts--Calculating Tax |
This is a collection of definitions related to ratios, proportions, and percents. This includes general definitions for ratios, proportions, percents, as well as terms related to similarity, proportionality, and equivalence of ratios. Note: The download is a PNG file. Related ResourcesTo see the complete collection of Math Definitions on this topic, click on this Link. |
Percents, Proportions, Ratios and Rates | |
Definition--Ratios, Proportions, and Percents Concepts--Calculating Tips |
This is a collection of definitions related to ratios, proportions, and percents. This includes general definitions for ratios, proportions, percents, as well as terms related to similarity, proportionality, and equivalence of ratios. Note: The download is a PNG file. Related ResourcesTo see the complete collection of Math Definitions on this topic, click on this Link. |
Percents, Proportions, Ratios and Rates | |
Definition--Ratios, Proportions, and Percents Concepts--Converting Units |
This is a collection of definitions related to ratios, proportions, and percents. This includes general definitions for ratios, proportions, percents, as well as terms related to similarity, proportionality, and equivalence of ratios. Note: The download is a PNG file. Related ResourcesTo see the complete collection of Math Definitions on this topic, click on this Link. |
Percents, Proportions, Ratios and Rates | |
Definition--Ratios, Proportions, and Percents Concepts--Dimensional Analysis |
This is a collection of definitions related to ratios, proportions, and percents. This includes general definitions for ratios, proportions, percents, as well as terms related to similarity, proportionality, and equivalence of ratios. Note: The download is a PNG file. Related ResourcesTo see the complete collection of Math Definitions on this topic, click on this Link. |
Percents, Proportions, Ratios and Rates | |
Definition--Ratios, Proportions, and Percents Concepts--Equivalent Ratios |
This is a collection of definitions related to ratios, proportions, and percents. This includes general definitions for ratios, proportions, percents, as well as terms related to similarity, proportionality, and equivalence of ratios. Note: The download is a PNG file. Related ResourcesTo see the complete collection of Math Definitions on this topic, click on this Link. |
Percents, Proportions, Ratios and Rates | |
Definition--Ratios, Proportions, and Percents Concepts--Part-to-Part Ratios |
This is a collection of definitions related to ratios, proportions, and percents. This includes general definitions for ratios, proportions, percents, as well as terms related to similarity, proportionality, and equivalence of ratios. Note: The download is a PNG file. Related ResourcesTo see the complete collection of Math Definitions on this topic, click on this Link. |
Percents, Proportions, Ratios and Rates | |
Definition--Ratios, Proportions, and Percents Concepts--Part-to-Whole Ratios |
This is a collection of definitions related to ratios, proportions, and percents. This includes general definitions for ratios, proportions, percents, as well as terms related to similarity, proportionality, and equivalence of ratios. Note: The download is a PNG file. Related ResourcesTo see the complete collection of Math Definitions on this topic, click on this Link. |
Percents, Proportions, Ratios and Rates | |
Definition--Ratios, Proportions, and Percents Concepts--Percent |
This is a collection of definitions related to ratios, proportions, and percents. This includes general definitions for ratios, proportions, percents, as well as terms related to similarity, proportionality, and equivalence of ratios. Note: The download is a PNG file. Related ResourcesTo see the complete collection of Math Definitions on this topic, click on this Link. |
Percents, Proportions, Ratios and Rates | |
Definition--Ratios, Proportions, and Percents Concepts--Percent Decrease |
This is a collection of definitions related to ratios, proportions, and percents. This includes general definitions for ratios, proportions, percents, as well as terms related to similarity, proportionality, and equivalence of ratios. Note: The download is a PNG file. Related ResourcesTo see the complete collection of Math Definitions on this topic, click on this Link. |
Percents, Proportions, Ratios and Rates | |
Definition--Ratios, Proportions, and Percents Concepts--Percent Increase |
This is a collection of definitions related to ratios, proportions, and percents. This includes general definitions for ratios, proportions, percents, as well as terms related to similarity, proportionality, and equivalence of ratios. Note: The download is a PNG file. Related ResourcesTo see the complete collection of Math Definitions on this topic, click on this Link. |
Percents, Proportions, Ratios and Rates |