ClassFlow
Class Flow: Logic and Reasoning
[Free Registration/Login Required] This flipchart defines logical conditional statements in a hypothesis and conclusion formula. Using the if-then model, students will determine hypotheses and conclusions.
Purple Math
Purplemath: Geometry Word Problems: Introduction
Introduces how to set up and solve simple geometric-figure word problems. Includes advice regarding formulas to memorize.
Purple Math
Purplemath: Special Factoring: Differences of Squares
Demonstrates how to use the formula for finding the differences of squares, and warns against trying to factor a sum of squares.
Ducksters
Ducksters: Kids Math: Solving Algebra Equations With Addition and Subtraction
Kids learn about Solving Algebra Equations with Addition and Subtraction. Add and subtract from both sides. Example math problems are shown on page.
Ducksters
Ducksters: Kids Math: Solving Algebra Equations With Multiplication and Division
Kids learn about Solving Algebra Equations with Multiplication and Division. Multiply or divide from both sides. Example math problems are found on the site.
Washington State University
Washington State University: Formulas
This site from Washington State University explains the idea of a formula. It gives a definition and many examples of formulas.
Science and Mathematics Initiative for Learning Enhancement (SMILE)
Smile: The Area of a Circle
An investigative approach is given to exploring finding the area of a circle.
University of Sydney (Australia)
Equations for Thermodynamics
An exhaustive list of equations and formulas which are commonly used in thermal physics (including equations for triple point). Equations are organized according to category. Meaning of the symbols is clearly stated.