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ABCya.com was founded in 1996 by Alan Tortolani. [2] A public school teacher, Tortolani created his own activities for his students. Later, he decided to register a domain under ABCya.com. Tortolani chose this particular domain name "ABCya" to make it accessible to children and easy to type into a web browser.
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The square root of a positive integer is the product of the roots of its prime factors, because the square root of a product is the product of the square roots of the factors. Since p 2 k = p k , {\textstyle {\sqrt {p^{2k}}}=p^{k},} only roots of those primes having an odd power in the factorization are necessary.
A method analogous to piece-wise linear approximation but using only arithmetic instead of algebraic equations, uses the multiplication tables in reverse: the square root of a number between 1 and 100 is between 1 and 10, so if we know 25 is a perfect square (5 × 5), and 36 is a perfect square (6 × 6), then the square root of a number greater than or equal to 25 but less than 36, begins with ...
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JumpStart 1st Grade (known as Jump Ahead Year 1 in the United Kingdom) is a personal computer game created by Knowledge Adventure in 1995 intended to teach a first grade curriculum. It was reissued in 1999 with new box art, was updated significantly in 2000, and was replaced with JumpStart Advanced 1st Grade in 2002, which was later replaced ...
Cool Math Games (branded as Coolmath Games) [a] is an online web portal that hosts HTML and Flash web browser games targeted at children and young adults. Cool Math Games is operated by Coolmath LLC and first went online in 1997 with the slogan: "Where logic & thinking meets fun & games.".
The series contains two games: Big Thinkers! Kindergarten and Big Thinkers! 1st Grade. Both titles feature the same goal of collecting stars. The title was conceived and developed by Jonathan Maier. There were plans to release a third game in the series, Big Thinkers! 2nd Grade, which would have been released in 1998. [1]