 鲜花( 16)  鸡蛋( 39)
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9 T2 O5 T: D/ Z) p$ S) ZAbacus Class" b7 d* Q( g! {! U, d
Introduction:' f7 o5 c0 K/ Z1 i5 S' K
Abacus, a kind of calculator, is a calculating tool used primarily for performing arithmetic processes. Abacus class introduces Chinese abacus to students, bridging the gap of images and numbers, building up fast recognition of numbers and quick calculations by “heart”, promoting intuitive thinking and problem-solving capability,
0 A' q% C( n k3 J9 `4 {9 f% H xhelping them understand arithmetic calculations (addition, subtraction, multiplication and division). Through playing abacus, the child converts the numbers into beads (input), manipulates the beads (processing), and brings out the result (output). After finishing the abacus class and with daily practice, children will be able to do the arithmetic calculations mentally at high speed.2 a6 E: i2 g/ z! }
The advantages of learning to use an abacus help children develop powers of mental calculation. It enables children 1) to understand the basic number systems such as base-ten and place values, 2) to understand concepts of carrying and borrowing in arithmetic, 3) to understand combinations of 5 and 10 and complements of numbers, 4) to visualize close relations between numbers and numerals, and 5) to develop children's ability to perform mental calculations.
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发表于 2013-8-20 05:15
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