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In order to identify the natural numbers, we give them symbols that we call “numerals.” A numeral is not the same thing as the number itself, but it is just a name for the number. The numerals that are most familiar to us are the arabic symbols 1, 2, 3, 4, 5, … Another group of symbols that we often see are the Roman Numerals that start with I, II, III, IV, V, … Like the arabic symbols, the Roman Numerals are just different names for the number and are not the same as the actual numbers. The numeral III, for example, is different from the numeral 3, but both stand for the number three.

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.