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Infinity is not a number. We use the word and symbol for infinity to describe something whose size is too large to have a number. If you ask the question, "How many natural numbers are there?" The answer is infinity.

Natural Numbers

Numbers and Arithmetic

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Web www.visualmathlearning.com

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.