「数字のセンス」と「地頭力」がいっきに身につく 東大算数
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「数字のセンス」と「地頭力」がいっきに身につく 東大算数
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西岡 壱誠
Acerca de esta escucha
偏差値35から東大合格、シリーズ43万部！
◆「1/3で割る」の意味、わかりますか？◆
たとえば「6÷3」を考えてみましょう。
この数式を、「6つのものを3つに分ける」と考えて、
「2」と答えている人って多いのではないでしょうか？
この考え方は、間違っているわけではまったくありません。
でも、その解釈で言うと「6÷1/3」、
つまり「6つのものを『1/3つ』に分ける」という計算の意味が、
よくわからなくなってしまいます。
一方、数字のセンスがある人は、こう解釈しています。→続きは本文で！
◆本書の三大メリット◆
数字の｢苦手｣が｢得意｣に変わる！
□計算が速く、正確になる
□物事を数字で語れるようになる
□世界の見え方が変わる
◆著者からのメッセージ◆
算数には、実は無限の可能性があります。
それは「思考の武器」として、その後の人生でも使えるものです。
算数や数学の問題で使えるだけでなく、
そこからの勉強に、仕事に、人生に、大きくつながるものなのです。
◆本書の構成◆
はじめに 「小学校の算数」が「世界の見方を変える」武器になる
INTRIDUCTION 「数字のセンス」そのエッセンスは“小学校の算数”にある！
PART１ 「数字のセンス」をインストールする 東大算数
CHAPTER１ 計算が「圧倒的に速く」なる！足し算・掛け算のエッセンス
CHAPTER２ 「計算間違い」がグッとなくなる！足し算・引き算のエッセンス
CHAPTER３ 数字の「見え方」が変わる！割り算のエッセンス
CHAPTER４ 数に対する「理解」が深まる！約数のエッセンス
CHAPTER５ 「使い分ける」と世界が変わる！小数・分数のエッセンス
CHAPTER６ 複雑な問題を「いっきに簡単」にする！偶数・奇数のエッセンス
PART２ 「数字のセンス」をさらに高める 東大算数【実践編】
CHAPTER７ 立式思考で「頭の中を整理」できる
CHAPTER８ 全体思考で「見えていない課題」を特定できる
CHAPTER９ 逆算思考で「発想の転換」を促進できる
CHAPTER10 綺麗思考で「頭のメモリ」を節約できる
CHAPTER11 定義思考で「考えるスピード」を加速できる
CHAPTER12 試行思考で「地頭」と「数字のセンス」を高める
おわりに こんなに「世界が違って見える」勉強は、算数以外にない©2024 Nishioka Issei (P)2025 Audible, Inc.
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