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Intrusion
註釋

The Armathco series consist to of 6 books that upgrade math education two years by the end of the sixth grade. In also introduces the first graders to the positive and negative concepts of numbers when they are first introduced to the world of numbers. This lays down a solid foundation upon which the basic skills can be learned. All the books have an average of 150 pages that can be covered by the end of the end of her the school year.

To order Armathco Book #1 go to:

www.indianaaudio.com