This learning object is a Java applet in which the student is given the equation y = mx + b. The program first asks the student to move the line to the correct y-intercept and then rotate for the correct slope.
Type of Material:
This is an interactive Java applet.
Recommended Uses:
This applet should be used as re-enforcement for graphing linear equations in the slope-intercept form of a line.
Technical Requirements:
A JAVA 2 plug-in is required.
Identify Major Learning Goals:
This student using this applet will learn to graph a line using the slope-intercept form.
Target Student Population:
Beginning and Intermediate Algebra students
Prerequisite Knowledge or Skills:
The student should know what m and b represent in the slope-intercept form of a line and should know what is meant by rise over run when referring to slope.
Content Quality
Rating:
Strengths:
To graph the line, a very simple and logical process must be followed every time: move the line to the y-intercept and then drag the line up/down and over in accordance with the given slope. Excellent messages are shown if the user chooses the slope for the y-intercept and vice versa. It also points out errors if the user inverts the slope or forgets the sign on the slope or y-intercept. The student can also ask for a hint which can help them get started.
Concerns:
After numerous equations, an equation with a y-intercept of 0 or a slope of 0 was never given.
Potential Effectiveness as a Teaching Tool
Rating:
Strengths:
Consistency in presentation of the equation in the form y=mx+b allows a student to develop an understanding of the graphing process. Informative messages are displayed when a student makes an error directing the student how to correct their mistake.
Concerns:
none
Ease of Use for Both Students and Faculty
Rating:
Strengths:
Directions very simple because the applet is very simple to use.
Concerns:
Usually when the line was moved very close to but just below a point, the value was accepted but occasionally the position of the line would not be accepted and the user would be given a hint and told to re-graph.
Creative Commons:
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