CCSS

These are the resources that support this Common Core Standard.

CCSS.MATH.CONTENT.7.RP.A.1

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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.

This video includes a Video Transcript: https://www.media4math.com/library/video-transcript-algebra-applications-data-analysis-segment-4-what-adjustable-rate-mortgage

A Promethean Flipchart is available for this video: https://www.media4math.com/library/promethean-flipchart-algebra-applications-what-adjustable-rate-mortgage

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. In the process, the so-called Meander Ratio is explored. Students construct a mathematical model of a meandering river using the TI-Nspire. Having built the model, students then use it to generate data to find the average of many Meander Ratios. The results show that on average the Meander Ratio is equal to pi.

This video includes a Video Transcript: https://www.media4math.com/library/video-transcript-algebra-applications-variables-and-equations-segment-3-river-ratios

A Promethean Flipchart is available for this video: https://www.media4math.com/library/promethean-flipchart-algebra-applications-river-ratios

Definition--Rate

The definition of the term "Rate."

INSTRUCTIONAL RESOURCE: Pumpkin PI

In this Slide Show, do a hands-on geometry activity to measure π. Note: The download is a PPT file.

MATH EXAMPLE: Ratios and Rates: Example 01

Ratios and Rates: Example 1. Calculating a 1:1 ratio.

MATH EXAMPLE: Ratios and Rates: Example 02

Ratios and Rates: Example 2. Calculating a 1:2 ratio.

MATH EXAMPLE: Ratios and Rates: Example 03

Ratios and Rates: Example 3. Calculating a 1:3 ratio.

MATH EXAMPLE: Ratios and Rates: Example 04

Ratios and Rates: Example 4. Calculating a 1:4 ratio.

MATH EXAMPLE: Ratios and Rates: Example 05

Ratios and Rates: Example 5. Calculating a 1:5 ratio.

MATH EXAMPLE: Ratios and Rates: Example 06

Ratios and Rates: Example 6. Calculating a 2:1 ratio.

MATH EXAMPLE: Ratios and Rates: Example 07

Ratios and Rates: Example 7. Calculating a 2:3 ratio.

MATH EXAMPLE: Ratios and Rates: Example 08

Ratios and Rates: Example 8. Calculating a 2:5 ratio.

MATH EXAMPLE: Ratios and Rates: Example 09

Ratios and Rates: Example 9. Calculating a 1:2:1 ratio.

MATH EXAMPLE: Ratios and Rates: Example 10

Ratios and Rates: Example 10. Calculating a 1:3:1 ratio.

MATH EXAMPLE: Ratios and Rates: Example 11

Ratios and Rates: Example 11. Calculating a 1:4:1 ratio.

MATH EXAMPLE: Ratios and Rates: Example 12

Ratios and Rates: Example 12. Equivalent ratios for 3:4:5 right triangles.

MATH EXAMPLE: Ratios and Rates: Example 13

Ratios and Rates: Example 13. Equivalent ratios for 5:12:13 right triangles.

MATH EXAMPLE: Ratios and Rates: Example 14

Ratios and Rates: Example 14. Equivalent ratios for 30-60-90 right triangles.

MATH EXAMPLE: Ratios and Rates: Example 15

Ratios and Rates: Example 15. Equivalent ratios for 45-45-90 right triangles.

MATH EXAMPLE: Ratios and Rates: Example 16

Ratios and Rates: Example 16. Calculating rate for distance vs time.

MATH EXAMPLE: Ratios and Rates: Example 17

Ratios and Rates: Example 17. Calculating rate in dollars per gallon.

MATH EXAMPLE: Ratios and Rates: Example 18

Ratios and Rates: Example 18. Calculating rate in cost per pound.

MATH EXAMPLE: Ratios and Rates: Example 19

Ratios and Rates: Example 19. Calculating rate in gallons per hour.

MATH EXAMPLE: Ratios and Rates: Example 20

Ratios and Rates: Example 20. Dimensional analysis: Converting feet to inches.

MATH EXAMPLE: Ratios and Rates: Example 21

Ratios and Rates: Example 21. Dimensional analysis: Converting feet to yards.