This resource will compare different regions of the world by climate, geography, animal life, and culture. The site focuses on the differences within the United States regions.
WebMath offers a good practice site for basic subtraction. Children can type in the problem and an answer is given with explanation. A good site to check homework problems.
This WebMath site shows how to add, subtract, multiply and divide through a step by step examples. The user simple selects the operation and types in two numbers, and the computer solves the problem through a step by step process. Also demonstrates fractions, ratios, and more.
WebMath offers a good addition practice site. Students can use this site to check their homework assignment. An explanation is given regarding how each answer was arrived at.
This WebMath site explains how to enter your equation with one variable and solve for that variable. It explains step-by-step how to solve the equations and gives the final solutions.
This site provides a description and helpful hints on how to round numbers to any place value. Content also includes an interactive problem solver complete with a full desciption of how the answer was accomplished.
Use this "math solver" to subtract two fractions (and/or mixed numbers) that you enter. The site will explain in detail the process of subtacting the fractions you entered.