Curated OER
Dog Lot Math
Students use their problem-solving skills to answer math problems. They determine the cost of feeding sled dogs. They share their answers with the class.
Curated OER
Easy Does It
Students discover how inclined planes make work easier as they make mathematical predictions and prove their predictions through experiments.
Curated OER
High School Mathematics Problems from Alaska: Problem Setup and Pattern Recognition: Sunrise in Barrow, Alaska
Learners make predictions using given data, writing a linear equation from given data, and using a linear equation to predict later behavior.
Sophia Learning
Sophia: Finding a Formula for the Surface Area of a Cone
This video tutorial demonstrates how to find the formula for the surface area of a cone.
Oswego City School District
Regents Exam Prep Center: Slopes and Equations of Lines
Three resources for teaching slopes and equations of lines: a lesson with a formula for finding slope, different equations for lines, and several examples; a fourteen-question quiz covering slope, perpendicular and parallel lines, and...
Government of Alberta
Learn Alberta: Slope of a Line Segment
This interactive Java applet allows visualization of line segments and their slopes. The slope and how it is found is given for each line drawn by the user.
Other
Mathway: Algebra Formulas
Comprehensive resource provides algebra formulas for exponents, absolute value, factoring Pythagorean Theorem, linear equations, quadratic formula, distance formula, midpoint formula, and slope of a line through two points.
Lawrence Hall of Science
The Math Page: Skill in Algebra: The Slope of a Straight Line
Here is a site that clearly and thoroughly explains many topics surrounding the slope of a line, including slope of horizontal, vertical, parallel, and perpendicular lines in addition to the formula and concept of slope. There are...
Purple Math
Purplemath: Straight Line Equations: Slope Intercept Form
Slope-intercept form of a line is shown in formulas and examples with this Purplemath lesson. There are examples of slope-intercept with the slope and a point and with two points. Includes interactive widgets for exploring concepts.
Mathematics Archives
Math Archives: Visual Calculus: Tangent Lines to Polar Graphs
This site give the formula for finding the slope of the tangent line to a polar graph. The page offers step by step explanations and worked examples.
ClassFlow
Class Flow: Definition of Slope
[Free Registration/Login Required] Presents the definition of slope and the formulas for y-intercept form.
Northeast Parallel Architectures Center, Syracuse University
Npac Reu Program: Point Slope Form
This Northeast Parallel Architectures Center of Syracuse University site contains a brief description of the point-slope form for equations along with the formula.
Texas A&M University
Wtamu Virtual Math Lab: Intermediate Algebra
This site is a tutorial for students in algebra 2 or for those who need a refresher. The site has explanations, definitions, examples, practice problems and practice tests are found covering topics such as linear equations, graphing,...
Cuemath
Cuemath: Coordinate Geometry
A comprehensive guide for learning all about Coordinate geometry with definitions, the coordinate plane, formulas, equation of a line, related topics, solved examples, and practice questions.
ClassFlow
Class Flow: Straight Lines
[Free Registration/Login Required] Students explore straight lines, graphing lines and applying the formula for graphing linear equations.
Paul Dawkins
Paul's Online Notes: Algebra Cheat Sheet [Pdf]
An algebra "cheat sheet" to use as a reference when completing algebra homework. Lists basic facts, properties, operations, formulas, and functions, as well as common errors.
Oswego City School District
Regents Exam Prep Center: Parallel and Perpendicular Lines
This site displays formulas and examples, pertaining to slope, for parallel and perpendicular lines.
Interactive Mathematics
Interactive Mathematics: Graphs of Linear Functions
A brief overview of three methods used to graph lines is presented through examples. Slope-intercept, point-slope, and intercept form are demonstrated step-by-step along with a review of the formula for finding the slope of a line.
Department of Defense
Do Dea: Average Rates of Change
This document looks at look at the difference between averages and instantaneous rates of change. Formulas are provided for average speed, instantaneous speed, the slope of a secant line, the slope of a tangent, and the slope of a curve...
Wolfram Research
Wolfram Math World: Algebra
MathWorld provides a basic overview of Algebra. Includes a few formulas and many links to related topics.
Oswego City School District
Regents Exam Prep Center: Coordinate Geometry Proofs
A lesson, practice activity, and teacher resource for exploring coordinate geometry proofs.
Purple Math
Purplemath: Algebra Resources
Purplemath contains about 40 different lessons on various algebra topics. The lessons are divided into five different sections: preliminary topics, beginning algebra, intermediate algebra, advanced algebra, and word problems. The lessons...