Pre-Algebra 1.1 - Natural Numbers

If you have already learned to count and do simple arithmetic, you already know something about numbers. The first thing you learned about numbers was how to use them for counting. You may not have realized that there are many different kinds of number systems. For example, whole numbers are a different system from fractions. There are also other systems, with odd names like irrational, transcendental, and imaginary numbers, that you probably have never heard about. The numbers that you use for counting are called natural numbers.

Natural Numbers

Numbers and Arithmetic

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Visual Math Learning is a free educational web site featuring an interactive on-line tutorial for teaching elementary mathematics and basic arithmetic for grades K-12 at the pre-algebra level. It is an instructional aid for parents, teachers, and educators of primary, elementary, and middle school students, as well as a resource for lesson plans, homework help, and home schooling math lessons. The tutorial includes games, puzzles, interactive diagrams, and computer animated virtual manipulatives that emphasize active learning concepts by visualization.