This site contains a worksheet and instructions on how to use it. The worksheet asks students to find the domain of a function using several approaches.
Type of Material:
This site can be used in class, at home, or for individual learning. It can be used as a resource for basic math classes.
It works on all browsers including smart phones and does not require any plug-ins, Java, HTML, and Flash. The browser should include a pdf viewer. Requires a graphing calculator or computer grapher.
Identify Major Learning Goals:
To learn about the domain of a function represented in several ways.
Target Student Population:
Students in Intermediate algebra or Pre-Calculus
Prerequisite Knowledge or Skills:
This site contains both a handout for the instructor and the corresponding student worksheet for students learning about the domain of a function. It covers the topic in all the standard ways including: graphically, numerically, and verbally. The worksheet is laid out well and progresses through the standard functions.
Since the site contains just one pdf document, there is no interactivity. The content of the worksheet is no different than what is covered in a standard algebra textbook. It also does not address the shortcomings of the calculator such as the issue of a removable discontinuity not appearing on a calculator. The site does not discuss how to use graphing calculator to represent the domain of function.
Potential Effectiveness as a Teaching Tool
The worksheet will encourage students to compare the different ways of interpreting the domain of a function. It contains the standard material from an algebra class.
Since there is no interactivity and the content does not extend beyond the standard exercise found in an algebra textbook, it will only be used if the textbook is poor or not present.
Ease of Use for Both Students and Faculty
The instructions to the teacher are clearly written and students should have no trouble reading the instructions. Since these are just pdf documents, there will be no technical barriers to use the worksheet.
This is a very standard worksheet that may not hold the student’s attention or be memorable. Interactivity and creativity are lacking in this worksheet.
Other Issues and Comments:
The “Related Resources” section does not have any links to other resources that can help students read and learn more about domain representation. I would recommend providing additional real life examples about domain representation so students can practice more.
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