Purple Math
Purplemath: The Quadratic Formula Explained
An excellent discussion on solving quadratic formulas, accompanied by numerous examples.
Math Words
Mathwords: Terms and Formulas From Algebra I to Calculus
Mathwords is "an interactive math dictionary with enough math words, math terms, math formulas, pictures, diagrams, tables, and examples to satisfy your inner math geek." Written by a teacher of high school and college students,...
Mathematics Archives
Math Archives: Visual Calculus: Integration by Parts
Excellent site explaining how and why the Integration by Parts works. Go through the formula step-by-step.
Royal Society of Chemistry
Royal Society of Chemistry: Gridlocks: Level 3
A collection of grid puzzles that cover a wide variety of topics in advanced high school chemistry. These are excellent for topic review and reinforcement. The puzzles can be played online and also downloaded as worksheets. Answers are...
Royal Society of Chemistry
Royal Society of Chemistry: Gridlocks: Level 2
A collection of grid puzzles that cover a wide variety of topics in intermediate high school chemistry. These are excellent for topic review and reinforcement. The puzzles can be played online and also downloaded as worksheets. Answers...
University of California
Organic Chemistry Page: A Brief Tutorial on Drawing Lewis Dot Structures
An excellent lesson on writing Lewis structures. Examples shown include ammonium ion, carbon dioxide and the carbonate ion.
Clark University
Clark University: Dave's Short Trig Course: Summary of Trig Identities
This Clark University page is an excellent reference page for trig identities. It is a little difficult to read so take your time with the formulas. If you remember soh - cah - toa, the other formulas are right here.
Other
A Practical Approach to Customer Financial Statement Analysis
This site describes how to analyze the financial statements of a customer. The concepts can be applied by a business to its own financial statements. Scroll down in the document until you reach the section that describes the different...
Wolfram Research
Wolfram Math World: Parabola
This is an excellent site on parabolas. Examples and formulas are given.
Physics Classroom
The Physics Classroom: Kinematic Equations & Problem Solving
This excellent high school physics tutorial from The Physics Classroom investigates motion formulas using several problem-solving strategies including diagrams, equations, and lists.
California State University
Cal State San Bernardino: Linear Regression
Cal State San Bernardino offers an excellent site on linear regression, including formulas and an applet that allows you to mark the locations of ordered pairs and then determines the equation of the regression line and graphs it.
Other
Fact index.com: Thermal Conductivity
Fact-Index.com offers an excellent site on thermal conductivity. Includes table of contents, hyperlinked terms, and formulas.
Web Elements
Web Elements Periodic Table: Chlorine
An excellent source of basic data, chemical and physical properties and electron dot formula information on this element.
Curated OER
Displaymath27
An excellent, detailed tutorial explaining trigonometric substitution. Includes formulas, equations and examples.
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