This activity allows the user to graph linear inequalities in 2 variables. Users can input inequalities in algebraic form and graph them on a coordinate plane. The user can graph up to four inequalities as well as many ordered pairs.
Type of Material:
Simulation
Recommended Uses:
Can be used as an in-class lecture or support of an instructor lecture. Individuals or teams can work on the material following provided assignments.
Technical Requirements:
Any browser that supports JavaScript. Chrome iTunes app download available for MAC users.
Identify Major Learning Goals:
Develop a better understanding of linear inequalities and illustrate inequalities on the Cartesian coordinate system.
Target Student Population:
Students taking Intermediate Algebra or above.
Prerequisite Knowledge or Skills:
Basics knowledge of linear equations and inequalities.Basics knowledge of linear equations and inequalities.
Content Quality
Rating:
Strengths:
This module allows the user to graph linear inequalities in 2 variables. Users can input inequalities in algebraic form and graph them on a coordinate plane. It is possible graph up to four inequalities as well as many ordered pairs. The solutions to inequalities are shown as shades areas of the coordinate plane. This applet also has features that allow the user to solve inequalities for one or the other variable.
This site provides lessons and activities for instructors to help teach the content and to explore the concepts and usage of linear inequalities. It also gives a great visualization of the concepts presented. On top of that the site provides students with additional material to better understand the concept.
Potential Effectiveness as a Teaching Tool
Rating:
Strengths:
The site can be used as a part of in-class demonstration or a self-guided activity. A list of suggested activities with this tool is given under Instructor tab. A set of links to related topics is a big plus.
This site:
- Provides standards covered for four different states, as well as, Common Core and NCTM - Visualization of the graphing function helps learners see what happens when the inequalities are changed.
- Helps to visualize the area that contains the points that are solutions to the inequalities.
Concerns:
- Recommend using the proper symbols for less than and greater than in material.
Ease of Use for Both Students and Faculty
Rating:
Strengths:
Students can easily read the material and use the graphing tool immediately. The material provides help for instructors and provides questions for instructors to guide discussions in the classroom or even in an online class.
Concerns:
In order to understand the activity one must read the Learner tab first.
Creative Commons:
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