A good resource on chemical reactions, organized by topic: "Examples of chemical changes," "Chemical equations of chemical reactions," "Balancing equations," "Synthesis reactions," "Decomposition reactions," "Single replacement...

This interactive linear system solver allows you to enter two linear equations in general form and then plot the lines and find the answer using either substitution or elimination. The answer is presented with both methods accompanied by...

This activity is designed to review and reinforce three methods (graphing, substitution and elimination) of solving systems of linear equations. The students will work together and independently to find the solutions to systems of...

Sixth graders use substitution to find the values of equations and expressions they wrote using appropriate math symbols.

Reference material and practice problems solving systems of equations using elimination or substitution.

Finding the solution through use of substitution helps student realize there is only one answer when solving equations.

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,...

This article discusses the types of bias which can occur when using the Consumer Price Inex. It examines how much product quality change is actually represented by the consumer price index, and discusses methods used to overcome some of...

Given verbal and/or algebraic descriptions of situations involving systems of two-variable linear equations, the student will solve the system of equations by different methods.

Heres a comprehensive review of the basics of algebra. WyzAnt includes lessons on varied topics, calculators that show step-by-step solutions, and interactive worksheets for practicing and testing your skills. Just choose a topic and use...

This tutorial will guide you through several tasks associated with systems of linear equations in two variables. Complete with definitions, problems with step-by-step solutions, and example exercises for you to complete and check.

Given verbal descriptions of situations involving systems of linear equations, the student will determine the reasonableness of the solutions to the system of equations.

Explore the world of integration in this mini-lesson. Learn the integration rule and other integral concepts and try your hand at a few practice questions.

This site offers phonemic awareness activities that will extend the concepts and skills associated with this reading skill. Activities include rhyming words, segmenting syllables, substituting beginning sounds, isolating sounds, and...

This site provides a detailed overview of the various methods of integration. This first page covers the "gist" of the methods available, followed by much more detail on subsequent pages.

This is a very informative site on DNA mutations. There is estensive information and helpful diagrams.

This site, from the University of California, provides several problems from beginning differential calculus, as well as beginning integral calculus. The problems can be accessed by clicking on the link, and the information provided is...

In this chemistry laboratory, students will investigate the activity of 4 unknown metals and rank them according to their activity. In order to achieve this objective, students will be combining a 1M HCl solution with each metal and...

These class notes from a Microbiology course at Acadia University outline point mutations, frameshift mutations, mutagens, mutation rate, and mutant isolation. A good way to review already learned concepts.

This site gives a definition for what a trigonometric equation is, gives a listing of the simplest trigonometric equations, and lists seven main methods of solution of trigonometric equations with examples.

Seven problem online chemistry quiz that tests understanding of the five categories of chemical reactions.

An interesting application of wearable computing that is helping blind people "see". vOICe technology uses synthetic (bionic) vision through auditory video representations, combined with current brain implant and retinal implant...

A good Access Excellence site with an introduction to the processes of transcription and translation, leading to a student modeling activity.

For dozens of years it has been believed that the brain is organized into "sensory areas": that is, that there is a "visual area," an "auditory area," and so forth, and that the visual area can only process visual information. It has...