World Book Encyclopedia World Book Online for Kids has easy-to-read articles, images, illustrations, interactive maps, and teacher resources.
Discovery Education Math Homework Help has resources to help students master the basics of mathematics of numbers and number operations. Videos and tutorials help with the mastery of math skills in addition, subtraction, multiplication, and division--essential building blocks for success in mathematics.
Math Dictionary is an animated, interactive online math dictionary for students which explain over 600 common mathematical terms and math words in simple language.
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