| 摘要 |
The use of colored beads with an augmented simple abacus, adds an addition or expansion to the previous augmentations described in my previous patent which has the title: Augmented Simple Abacus With an Underlying Grid of Numbers or a Blank Sheet. And this invention has been given Publication No. US-2012-0028229-A1, and a Publication Date of: Feb. 1, 2012. This addition of colored beads to an augmented simple abacus is very helpful to the user in understanding or gaining insight into the relationships of numbers under 100. And the use of colored beads is very helpful to users of these types of abacuses in learning to: count, add, subtract, and learn the multiplication tables. And colored beads are also helpful in gaining an understanding of the "factors" in many numbers, and also in understanding the common factors in many numbers.
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