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I don't know, but maybe I do.✨

2025/7/18 Edited to

... Read more中学数学の参考書って種類が多くて、「結局どれがわかりやすいの?」と迷いますよね。うちもまさにそれで、学校のワークだけだと解き方が腑に落ちない状態が続きました。そこで使ったのが「まるっとわかる!中学数学の基本のきほん」。結論から言うと、“できない子が最初の一歩を踏み出す”のに向いていました。 良かったのは、説明が先にまとまっていて、そのあとに例題→練習問題の流れで「読んで終わり」になりにくいところです。中学数学の参考書でありがちな“途中の式や考え方が省略されている”感じが少なく、つまずいた原因を自分で発見しやすい印象でした。どの学年からでも使える構成なので、1年の内容に戻りたいときもサッと引けます。 「正負の数」は特につまずきやすい単元ですが、ここは“反対の性質”を生活の例に結びつけると理解が早かったです。たとえば、収入を+、支出を-として考えると、符号の意味がブレにくくなりました。温度計も同じで、0℃より上が+、下が-。この「基準(0)より上か下か」という感覚がつかめると、計算のルール暗記が減ります。 我が家でやったコツは、問題を間違えたらすぐ答え合わせするのではなく、まず解説ページに戻って“どの言葉がわからなかったか”をチェックすること。たとえば「反対の数」「絶対値」「平均との差」など、言葉があいまいだと式が作れません。用語が腑に落ちるだけで点数が伸びることもありました。 「中学数学の解きかたが1冊でしっかりわかる本」系を探している人には、まず基礎を固める用途としておすすめです。最初は1日10〜15分でもOKなので、正負の数→文字式→方程式…のように“苦手単元から戻る”形で進めると続きやすいと思います。やればなんとかなる、を本当に実感した一冊でした。

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