| 翻訳と辞書 |
| fraction bars ： ウィキペディア英語版 |
fraction bars
Fraction Bars are a type of mathematical manipulative, developed in the sixties by Albert B. Bennett, Jr.〔(About Albert B. Bennett, Jr. )〕 They provide visual illustrations of mathematical operations with fractions〔(Mathematical operations with fractions )〕 to gain better understanding of these operations.
== Overview ==
Fraction Bars for halves, thirds, fourths, fifths, sixths, tenths, and twelfths form a complete deck. These bars are a part-to-whole region model for teaching the basic concepts of fractions, equality, inequality, addition, subtraction, multiplication, division, and ratios. They are plastic coated so marking bars with water-base pens can be washed off. Fraction Bars are used for teaching fractions in schools and for preparing teachers.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
■ウィキペディアで「fraction bars」の詳細全文を読む
スポンサード リンク
| 翻訳と辞書 : 翻訳のためのインターネットリソース |
Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.
|
|