The expression Short Course quite accurately describes this tutorial site. It is divided into two sections: History and Mathematics. The brief history of complex numbers recounts the contributions of Cardano, Bombelli, Girard, Descarte, Euler, and Gauss. The Mathematics section of the site emphasizes the geometry of complex numbers in terms of the Complex Plane. Complex numbers are defined, and their algebra is explained.
Type of Material:
Tutorial.
Recommended Uses:
Student reference.
Technical Requirements:
A Java-enabled browser.
Identify Major Learning Goals:
To provide a brief review/introduction to complex numbers.
Target Student Population:
Students who are studying College Algebra, Pre-Calculus, or more advanced courses that require complex numbers.
Prerequisite Knowledge or Skills:
Basic algebra and some trigonometry.
Content Quality
Rating:
Strengths:
The quality of the writing, the explanations, the graphics, and the overall presentation are commendable. Where trigonometry is required, the author provides a link to his Short Trig Course.
Concerns:
None
Potential Effectiveness as a Teaching Tool
Rating:
Strengths:
This tutorial site should serve students well who would like a brief review or introduction to complex numbers. The numerous graphs and the emphasis on the complex plane make the site visually appealing and probably of more interest to students than would be a purely algebraic introduction to the subject.
Concerns:
The absence of any exercises and the scarcity of worked-out examples is a distinct drawback.
Ease of Use for Both Students and Faculty
Rating:
Strengths:
This site is easily navigated. No problems were encountered in its use.
Concerns:
None
Creative Commons:
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