1·In response to declining math skills among their students, some Japanese schools are bringing back an ancient calculating device—the abacus.
为了应对学生数学能力的下降，日本的一些学校重新使用起一种古老的计算工具——算盘。
2·The Chinese invented the abacus; India invented the binary and the decimal systems.
中国人发明了算盘；而印度人发明了二进制及十进制算法。
3·Such fine calibrations may date back to the use of the abacus, and to an old Chinese convention that assumes a 360-day year for the purpose of reckoning interest payments.
如此精细的调整可追溯到算盘的使用，追溯到中国的一个古老传统，即假设一年为360天，以达到简化利息支付的目的。
4·Why is the abacus such an effective teaching device?
为什么算盘有效地帮助了教学？
5·Look up words and concepts like abacus, Thales’ theorem, obtuse triangle and a lot more in this special site.
Math Glossary: 这里可以查找像算盘、泰勒斯定理，钝角三角形等等更多的单词以及概念。