Why do we refrigerate food? To keep bacteria from ruining the food. Refrigeration slows down bacterial growth, allowing us to keep food in our homes for a longer time. But what happens when bacteria continue to grow even in a refrigerator?

This is one reason why the bacterium known as listeria is so dangerous: It continues to grow even when refrigerated. In this module, we study exponential growth models for bacteria. We look at piecewise functions that show bacterial growth before and after refrigeration. 

Students will explore time-dependent bacterial growth functions. They will analyze data in tables and in graphs. They'll use the Desmos graphing calculator to explore the properties of exponential functions.

In this Algebra Application, students examine the music industry, specifically the rise of Korean pop music, or K-Pop. Using industry data students examine tables and graphs of categorical data before identifying possible functional relationships. A mathematical model is developed to explore the relationship between viral videos and sales.

Topics covered:

• Mathematical modeling
• Linear regression
• Categorical data
• Functions

Note: The download is a PDF file that includes the link to the GoogleDoc version.

In this Algebra Application, students examine the budding industry of commercial space travel. Using data from the Bureau of Transportation Statistics, students build a mathematical model from historical airfare data. This model is used to predict when commercial space travel will become affordable. This also includes a discussion of inflation-adjusted costs and the future value of money.

Topics covered:

• Mathematical modeling
• Linear regression
• Exponential functions
• The time value of money

Note: The download is a PDF file that includes the link to the GoogleDoc version.

In this TI Nspire tutorial, the Graph window is used to graph a linear function. This video supports the TI-Nspire Clickpad and Touchpad.

This Mini-Tutorial Video includes a WORKSHEET: https://www.media4math.com/library/worksheet-ti-nspire-mini-tutorial-graphing-linear-function

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 Videos

To see the complete collection of Closed Captioned Videos, click on this Link

This slide show provides 8 examples of quadratic functions in factored form and analyzes their graphs. Note: The download is a PPT file.

This slide show provides 18 examples of quadratic functions in standard form and analyzes their graphs. Note: The download is a PPT file.

In this Slide Show, learn about graphs of quadratic functions. Note: The download is a PPT file.

In this Slide Show, learn how to graph quadratic functions in standard form using sliders for the values of a, b, and c. This presentation requires the use of the TI-Nspire iPad App. Note: the download is a PPT.

In this Slide Show, learn how to graph quadratic functions in vertex form using sliders for the values of h and k. This presentation requires the use of the TI-Nspire iPad App. Note: the download is a PPT.

In this TI-Nspire Activity, use the Geometry and Graphing Tools to explore the ratio of Circumference to Radius as a linear function. 

Note: The Preview is a Google Slide Show and the download is a PPT. Subscribers to Media4Math can download resources.

To see the complete collection of TI graphing calculator resources, click on this Link.

This quiz covers the topic of matching the graph of a quadratic function to its equation. For this quiz, the values of a, b, and c are in the range -5 to 5. The interactive version is taken online.

Note: The download is the PDF version of the quiz (with answer key).

Related Resources

To see the complete collection of Quizzes on this topic, click on this link: https://bit.ly/2XyL6py

This quiz covers the topic of matching the graph of a quadratic function to its equation. For this quiz, the values of a, b, and c are in the range -10 to 10. The interactive version is taken online.

Note: The download is the PDF version of the quiz (with answer key).

Related Resources

To see the complete collection of Quizzes on this topic, click on this link: https://bit.ly/2XyL6py

This quiz covers the topic of matching the graph of a quadratic function to its equation. For this quiz, the values of a, b, and c are in the range -20 to 20. The interactive version is taken online.

Note: The download is the PDF version of the quiz (with answer key).

Related Resources

To see the complete collection of Quizzes on this topic, click on this link: https://bit.ly/2XyL6py

This quiz covers the topic of matching the graph of a quadratic function to its equation. For this quiz, the values of a, b, and c are in the range -5 to 5. The interactive version is taken online.

Note: The download is the PDF version of the quiz (with answer key).

Related Resources

To see the complete collection of Quizzes on this topic, click on this link: https://bit.ly/2XyL6py

This quiz covers the topic of matching the graph of a quadratic function to its equation. For this quiz, the values of a, b, and c are in the range -10 to 10. The interactive version is taken online.

Note: The download is the PDF version of the quiz (with answer key).

Related Resources

To see the complete collection of Quizzes on this topic, click on this link: https://bit.ly/2XyL6py

This quiz covers the topic of matching the graph of a quadratic function to its equation. For this quiz, the values of a, b, and c are in the range -20 to 20. The interactive version is taken online.

Note: The download is the PDF version of the quiz (with answer key).

Related Resources

To see the complete collection of Quizzes on this topic, click on this link: https://bit.ly/2XyL6py

This quiz covers the topic of matching the graph of a quadratic function to its equation. For this quiz, the values of a, b, and c are in the range -5 to 5. The interactive version is taken online.

Note: The download is the PDF version of the quiz (with answer key).

Related Resources

To see the complete collection of Quizzes on this topic, click on this link: https://bit.ly/2XyL6py

This quiz covers the topic of matching the graph of a quadratic function to its equation. For this quiz, the values of a, b, and c are in the range -10 to 10. The interactive version is taken online.

Note: The download is the PDF version of the quiz (with answer key).

Related Resources

To see the complete collection of Quizzes on this topic, click on this link: https://bit.ly/2XyL6py

This quiz covers the topic of matching the graph of a quadratic function to its equation. For this quiz, the values of a, b, and c are in the range -20 to 20. The interactive version is taken online.

Note: The download is the PDF version of the quiz (with answer key).

Related Resources

To see the complete collection of Quizzes on this topic, click on this link: https://bit.ly/2XyL6py

This quiz covers the topic of matching the graph of a quadratic function to its equation. For this quiz, the values of a, b, and c are in the range -5 to 5. The interactive version is taken online.

Note: The download is the PDF version of the quiz (with answer key).

Related Resources

To see the complete collection of Quizzes on this topic, click on this link: https://bit.ly/2XyL6py

This quiz covers the topic of matching the graph of a quadratic function to its equation. For this quiz, the values of a, b, and c are in the range -10 to 10. The interactive version is taken online.

Note: The download is the PDF version of the quiz (with answer key).

Related Resources

To see the complete collection of Quizzes on this topic, click on this link: https://bit.ly/2XyL6py

This quiz covers the topic of matching the graph of a quadratic function to its equation. For this quiz, the values of a, b, and c are in the range -20 to 20. The interactive version is taken online.

Note: The download is the PDF version of the quiz (with answer key).

Related Resources

To see the complete collection of Quizzes on this topic, click on this link: https://bit.ly/2XyL6py

This quiz covers the topic of matching the graph of a quadratic function to its equation. For this quiz, the values of a, b, and c are in the range -5 to 5. The interactive version is taken online.

Note: The download is the PDF version of the quiz (with answer key).

Related Resources

To see the complete collection of Quizzes on this topic, click on this link: https://bit.ly/2XyL6py

This quiz covers the topic of matching the graph of a quadratic function to its equation. For this quiz, the values of a, b, and c are in the range -10 to 10. The interactive version is taken online.

Note: The download is the PDF version of the quiz (with answer key).

Related Resources

To see the complete collection of Quizzes on this topic, click on this link: https://bit.ly/2XyL6py

This quiz covers the topic of matching the graph of a quadratic function to its equation. For this quiz, the values of a, b, and c are in the range -20 to 20. The interactive version is taken online.

Note: The download is the PDF version of the quiz (with answer key).

Related Resources

To see the complete collection of Quizzes on this topic, click on this link: https://bit.ly/2XyL6py