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 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.

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

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