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The abacus: primitive but effective digital computer 1970 Feb: Nine new puzzles to solve 1970 Mar: Cyclic numbers and their properties 1970 Apr: Some mathematical curiosities embedded in the solar system: 1970 May: Of optical illusions, from figures that are undecidable to hot dogs that float 1970 Jun: Elegant triangle theorems not to be found ...
Mental abacus – As students become used to manipulating the abacus with their fingers, they are typically asked to do calculation by visualizing abacus in their head. Almost all proficient abacus users are adept at doing arithmetic mentally. [citation needed] Chisanbop
The abacus system of mental calculation is a system where users mentally visualize an abacus to carry out arithmetical calculations. [1] No physical abacus is used; only the answers are written down. Calculations can be made at great speed in this way.
A word search, word find, word seek, word sleuth or mystery word puzzle is a word game that consists of the letters of words placed in a grid, which usually has a rectangular or square shape. The objective of this puzzle is to find and mark all the words hidden inside the box.
The search engine that helps you find exactly what you're looking for. Find the most relevant information, video, images, and answers from all across the Web. AOL.
Challenging your brain with printable word searches is fun all year long, but these holiday word searches are sure to get you in the spirit and help you celebrate. You can print out these free ...
The Chisanbop system. When a finger is touching the table, it contributes its corresponding number to a total. Chisanbop or chisenbop (from Korean chi (ji) finger + sanpŏp (sanbeop) calculation [1] 지산법/指算法), sometimes called Fingermath, [2] is a finger counting method used to perform basic mathematical operations.
Julian Lennon underwent surgery to treat skin cancer ... - AOL