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1b:Tf47,こんにちは！はじめまして！

フォーカスゴールドを全てやるかどうかは数学が得意か苦手かによります。

まずは数学が苦手な場合です。例えば、学校の定期テストなどの問題や学校のワークなどを解いても解けない、基礎問題レベルに苦戦する、応用題になると解けないという場合であれば、フォーカスゴールドをおすすめします。焦って難しい問題に手を出して解けないという時間がいちばん勿体無いです。東工大と言えど基礎問題(簡単だから基礎なのではなく、大切だから基礎)はとても重要です。定石を知ることは大事です！！
フォーカスゴールドの基礎問題をやり間違えたものにはマークをする。そして後日解き直し、また解けなかったらマークをする。これをただひたすら繰り返すことをオススメします。❌を⭕️にするという意識をもって勉強しましょう。

次に数学がある程度できる場合です。どのくらいかと言うとフォーカスゴールドの基礎問題ならおおよそ解ける、学校の定期テストも割と取れる、数学に対して苦手意識はあまりない、ことくらいのレベルであればフォーカスゴールドではなくもう少し薄い参考書を使ってもいいと思います。
使い方としては1２年分野の参考書をやり、間違えたところを復習する。そしてその時に自分の苦手分野、間違いが多い分野のみフォーカスゴールドのような網羅性のある参考書に戻るというやり方です。こうすることで得意分野を効率的に勉強出来ますし、応用問題に効率よくステップアップ出来ます。ただし、できない分野不安な分野は必ず網羅性のある参考書に戻るということは忘れないでください。
おすすめの参考書ですが、東工大を目指すのであれば｢大学への数学 一体一対応｣がオススメです。特に数II･Bはものすごくおすすめです。ベクトル数列範囲が特にいいです。ただしこの参考書は3年でやることが多いので高２だと少し難しいかもしれません。その場合は高三の夏休みにやることをおすすめします。

あまり多くの参考書に手を出すのはおすすめしません。基本的にどの参考書を使ってもその参考書を何周もし、完璧にすればどの大学でも戦えるような数学力は身につきます。1番大切なのは【どの】参考書をやるかではなく【どれくらい】参考書をやりこむかです。フォーカスゴールドが多すぎると思ったらほかの参考書を選びその参考書を完璧に仕上げてください(塾のテキストでもいいと思います）。フォーカスゴールドを辞書のように使うのはありだと思います！！
受験直前になったら東工大の数学25ヵ年を使うことをお勧めします。自分の苦手意識のある分野を集中的にやるのは非常に効果的です。

最後に自分が東工大を受験する時に使っていた参考書を参考までに載せておきます。

【高２冬】・青チャート1A ・青チャート２Ｂ ・学校のワーク(定期テストの範囲)
【高３春】 ・青チャート3 ・青チャート1A、２Ｂ ・学校のワーク
【高３夏】 ・一体一対応2B ・一体一対応3
【高３夏後】 ・今まで使った参考書の復習
【高３冬】 ・東工大の数学25ヵ年 ・(やさしい理系数学)苦手分野のみ
【高３受験前】 ・東工大過去問 ・東工大の数学25ヵ年

東工大は数3が特に重要です！数3は特に頑張ってください！1d:Tc3f,こんにちは^_^
現在慶應義塾大学経済学部に在学しているものです。私も浪人を通して2年間数学と向き合ってきたので少しためになるお話ができると思います。そして私もフォーカスゴールドを使っていました。

まず大雑把に説明します。まずフォーカスは解法暗記のための参考書です。英語で言うところの単語帳に当たると思っています。なので難関大学を志望する人はフォーカスのすべての問題の解法をすぐ思い浮かべることが必要になります。数学でどのくらい点数を稼ぎたいのかによって科目によって充てれる時間は変わってくると思うのですが、私は一橋志望で数学の比重が重かったので、私のような数学を得点源にしたいと考えるならフォーカスの問題の解法暗記はマストだと思ってください。詳しくどうやるか説明すると、まずは単元別でもなんでもいいのですが、まずやってみる。そしてできる問題には丸をつける。2周目は丸のついてない問題だけに取り組む。そして全ての問題に丸がつくことを目指します。問題に丸をつける時はその問題をきちんと理解した上で丸をつけるようにしてください。次からその問題は軽く流す程度になるので最初の理解が曖昧だと、自分の力になりません。取り組む問題は例題だけで大丈夫です。そしてすべての問題に丸がついたら、ここからはフォーカスを単語帳のように使います。問題を見て、パッと頭の中で解法が浮かんだら、紙にわざわざ問題を解かないでいいので、どのような記述の仕方をすればいいのなど軽く解説をみて、すぐ次の問題に移ります。そして高速でフォーカスを周回します。正直ここまでやればほとんどの大学の数学でボーダーラインくらいは取れると思います。一つ基準を出すとすれば、河合塾の記述模試で偏差値65〜70くらいは取れると思います。ここからは数学を得点源にしたい場合は参考にするといいと思います。私はフォーカスである程度問題がとけるようになったら次は実践力をつけたいので、プラチカや阪大なら阪大の数学20ヵ年などを買い、志望校の問題に合わせた対策をするべきです。また、現役生は特に時間に余裕がないのでおそらくプラチカなどを全部やる時間はないかと思います。なのでプラチカでも頻出分野、例えば確率や微積などの問題は全部やるなど効率的に自分で考えてやるべきです。
フォーカスゴールドは難関大学の入試数学の基本的な解法が詰まっているのでとてもいい参考書です。最初は問題量に圧倒されると思いますが、あれを完璧すればかなり数学力が身につきます。ぜひ頑張って見てください。2:["$","main",null,{"className":"px-4 pt-4 pb-4","children":["$","div",null,{"className":"max-w-3xl mx-auto w-full","children":[["$","div",null,{"className":"mb-8","children":["$","$L7",null,{"href":"https://unilink-app.onelink.me/isbO/h6xeh63x?advice=qVHif34BTqPwDZPuDPyV","target":"_blank","children":["$","$L8",null,{"src":"/images/web_to_app_banner.jpg","width":3660,"height":1500,"sizes":"100vw","style":{"width":"100%","height":"auto"},"alt":"UniLink WebToAppバナー画像","className":"mb-4 rounded"}]}]}],["$","h1",null,{"className":"text-xl font-semibold mb-2","children":"フォーカスゴールド"}],["$","div",null,{"className":"flex justify-between mb-4","children":[["$","div",null,{"className":"text-left text-xs text-caption","children":["クリップ(",1,") コメント(",1,")"]}],["$","div",null,{"className":"text-right text-xs text-caption","children":"1/22 12:43"}]]}],["$","div",null,{"className":"coach-mark 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mb-4","children":[["$","div","advice-part-0",{"children":[null,"こんにちは、名古屋大学医学部のファルコンといいます。\n\nフォーカスゴールドなどの網羅系参考書の簡単なレベルの問題だけをやるとかでいいと思います。そのレベルの問題だけを解くのであれば、基礎問題精講とほとんど変わりません。変に参考書を分けるよりかはフォーカスゴールドだけで進めてく方がやりやすいんじゃないかなと思います。\n\n予習するなら圧倒的に数1aです。数2bをいきなりやり始めても、数1aの知識がないなら話しになりませんよ。\n中学の図形問題と数2bの図形と方程式はほぼ別物です。扱っているのはあくまで方程式であり、図形の性質はサブ要素です。\n絶対に数1aからやりましょう。"]}]]}],["$","div",null,{"className":"mb-4","children":["$","$L16",null,{"adviserImageUrl":"https://firebasestorage.googleapis.com/v0/b/unilink-48e75.appspot.com/o/images%2Fs_F79AD8D80EE2410E948B695BEE0BE23D.jpg?alt=media&token=1456b046-ac49-4f34-ab65-481864a7ad5c","adviserName":"ファルコン","adviserDepartment":"名古屋大学医学部","adviceId":"qVHif34BTqPwDZPuDPyV","numberOfFan":59,"clipsAvg":9.297872340425531,"adviceRateAvg":4.799435028248587,"profile":"名古屋大学医学部に在学中。\n数学、物理を得意にしてました。\n\n相談ドシドシ送ってきてください👏👏"}]}],["$","div",null,{"children":["$","$L7",null,{"href":"https://ck.jp.ap.valuecommerce.com/servlet/referral?sid=3364577&pid=884970531&vc_url=http%3A%2F%2Fshingakunet.com%2F%3Fvos%3Dnrmnvccp0000100","rel":"nofollow","target":"_blank","children":["$","$L8",null,{"src":"/images/document_request_banner.jpg","width":3660,"height":1500,"sizes":"100vw","style":{"width":"100%","height":"auto"},"alt":"UniLink 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items-center py-4","children":[["$","div",null,{"className":"flex-1","children":[["$","div",null,{"className":"mb-1","children":"数学の予習"}],["$","div",null,{"className":"text-xs text-caption line-clamp-2 mb-1","children":"FocusGoldの例題と一緒に載っている問題を一通り終えたのであれば、数Ⅱの予習に入ることをお勧めします。数学は早めに終えた方が良いのは確かで、数ⅢまでやってからⅠAⅡBに戻るとまた違った見方が出来て面白いので、ある程度定着すればさっさと次に行くのがいいかなと個人的には思っております。数Ⅱは数Ⅲに入る前の準備みたいなものですから、早めに終わらせてしまいましょう。\n\nで、これはついでに言いたいだけなんですが、FocusGoldをマスターするのはまず無理だと思った方が良いですよ。例題のページに限るならまだ出来なくもないですが、＊4の問題は難しいですし結構大変です。章末問題もなかなか骨のある問題が揃っていますし、本全体の後ろの方を見れば東大の入試問題なんかがゴロゴロ載ってます。この本を本当の意味で完璧に出来れば理Ⅲだって行けますよ。それくらいには難しいので今は完璧を目指さないでください、例題を1周か2周してだいたい理解したらそれでいいです。\n\n関係ない話ばっかりしてしまって申し訳ありませんが、とにかく今はマスターなんてしなくていいので、ある程度理解したら次に進みましょう。高校数学は面白いですから、是非とも早く数Ⅲまで学習してみてほしいところです。"}],["$","div",null,{"className":"flex mb-1","children":[["$","svg",null,{"stroke":"currentColor","fill":"currentColor","strokeWidth":"0","viewBox":"0 0 24 24","className":"text-subPrimary 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items-center py-4","children":[["$","div",null,{"className":"flex-1","children":[["$","div",null,{"className":"mb-1","children":"数学"}],["$","div",null,{"className":"text-xs text-caption line-clamp-2 mb-1","children":"focus gold(以下FG)を使い続けることをお勧めします。いくつもの参考書に手をつけるよりかは、１つ１つの参考書を何周もし、じっくりやりこんでいくほうがいいです。質問者さんは基礎から固めたいということですが、FGは基礎から発展まで網羅されています！また、まだ高校2年生ということで、時間もあるのであえて薄めの参考書に取り組む必要もないと思います。質問文にもあるように早めに基礎を固めたいというのであれば、マスター編の星2つと3つの例題だけを解く、などしてみてもいいと思いますよ。星1つは解くまでもなく軽く見るだけ、星4つは少し応用なので今はやらなくてもいい、と割り切ってもいいです。\n 私は、高3の夏休みまでに数3までのマスター編の例題(上記のように抜粋で)を一周と、step up問題の苦手な単元と微積(微積は苦手ではなかったですけど必ず入試にでるし重要な単元ですから笑)を終わらせ、夏休みで例題とその練習問題を一周、9月以降では夏休みにやって間違えた例題練習問題を復習しつつ平行してLevel up問題を解きはじめていました。11月後半ごろになって過去問演習を始めるときも、平行してlevel up問題を何度も解いていました。\n 私が受験で使った参考書は、FGと過去問だけですが、先ほど述べたやり方でかなり力がついたと実感しています。経験して言えることですが、FGはとてもいい参考書だと思います！なのでFGを使い続け、やりこむことをオススメします！\n そして間違えた問題は必ず解けるまでやってください。復習が大事です！がんばってください！\n "}],["$","div",null,{"className":"flex 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items-center py-4","children":[["$","div",null,{"className":"flex-1","children":[["$","div",null,{"className":"mb-1","children":"フォーカスゴールドorやさしい理系数学"}],["$","div",null,{"className":"text-xs text-caption line-clamp-2 mb-1","children":"こんにちは！\n東工大の4年のものです(^^)\n\nもし、まだ1冊も解法パターンを入れる参考書（FocusGoldや青チャート、一対一対応など）をやっていないなら、必ず1冊はしっかりやった方がいいです！\n\nどんなに焦っても、基礎がない中演習をすると、その問題の解法を覚えるだけになってしまいます。\n\n基礎のパターンを知っていれば、どのパターンを使っているのか当てはめて考えられるので応用力が付きます。\n\nもし、もうやっていて、中途半端な参考書があるなら新しいのに行かず、それをしっかりやりましょう！\n\nしっかりというのは「全ての問題を１度は自力で解けた」という状態です。\n\nこれを分かりやすく実現する参考書の使い方を説明します。\n\n\n\n１周目は全部やる、まちがえたのにチェックをする。\n2周目は間違えたのだけやる。そのときも間違えたならチェックする。（つまり２つチェック付きますね）\n3周目は2周目まちがえたのだけやる。\n\n\nようは一度でも自力で解けたらもうやらないということです。基本的にまたやっても解けるので。\n\nこれを繰り返すと最終的には、全てが１度は自力で解けた状態になると思います！\n\nどの教科でもこれでやると1番効率がいいです！\n\nまた、解法パターン系の参考書は問題数が多いです。なので例題だけやっていって練習問題や章末問題は後回しでいいかと。最悪やらずに演習系の参考書（やさしい理系数学や大学への数学の新スタンダード演習など）に入ってもいいと思います！\n\n\n\nもし、ある程度パターンの方が入っているなら、演習系の参考書（やさしい理系数学）に入っていいと思います！\n\nその中で怪しい分野があればそこだけ戻ってもいいですし。\n\n\n\nこれで回答になったでしょうか？\n不明な点あったらいつでも連絡してください！\n\nなかなか成果が出ず辛い時期ですが\nここで頑張れば必ず結果はついてきます！\n\n最後まで全力で頑張りましょう！"}],["$","div",null,{"className":"flex 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items-center py-4","children":[["$","div",null,{"className":"flex-1","children":[["$","div",null,{"className":"mb-1","children":"東大京大までの数学の基礎力養成について"}],["$","div",null,{"className":"text-xs text-caption line-clamp-2 mb-1","children":"こんにちは。\n\n基本問題精講+1対1対応でも網羅系の参考書と同じように解法暗記はできると思うよ。\n\nただ、地頭が相当良くないと難しい。\n\nチャートやフォーカスゴールドのような網羅系の教科書の良いところは\n「完全に文野別や解法別に問題が分かれていて、それが順番立てて記載されているのでそれ通りに解いていけば自然と頭の中に解法のフローチャートが構築出来ること」\nなんだけど基本問題精講+1対1対応でそれをやるのは少し能力が必要かもしれないね。\n\n質問に対する解決方法としては\n\n①問題量的にフォーカスゴールドを避けたい\n→数学を解く上でほぼ最低限の問題量があの量なので避けることは出来ない。量を避けるよりも最低限の復習回数で定着できる復習方法を考えよう。\n\n②フォーカスゴールドが単純に自分に合っていない\n→フォーカスゴールド以外にも網羅系の問題集はいくつかある。チャート式だったりニューアクションだったり本屋で見てみるのをお勧めする。\n\n③学校の授業の質がかなり良く、網羅系見た感じ一周目からほとんど解ける\n→基礎問題精講や標準問題精講に取り組んでもいい能力が十分についている。"}],["$","div",null,{"className":"flex mb-1","children":[["$","svg",null,{"stroke":"currentColor","fill":"currentColor","strokeWidth":"0","viewBox":"0 0 24 24","className":"text-subPrimary mr-1","children":["$undefined",[["$","path","0",{"fill":"none","d":"M0 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items-center py-4","children":[["$","div",null,{"className":"flex-1","children":[["$","div",null,{"className":"mb-1","children":"FocusGoldで足りますか？"}],["$","div",null,{"className":"text-xs text-caption line-clamp-2 mb-1","children":"こんにちは！結論から言うともう一つレベルの上の参考書を過去問を解く前にやれるとベストです。\nその理由を数学の問題を解く上で必要なステップを紹介しつつ解説します！\n\n1　問題を見てどのような解法が使えるかを手を動かして実験してみる！\n難関大の数学で出題される問題は今まで似たような問題を解いたことがなく、すぐには解き方が思いつかないものがほとんどです。ぼーっと眺めていても何も始まらないので手を動かして自分が知ってる解法を試していく必要があります。\n(例　数列の問題の場合　いつも通り公式に当てはめれば解けるのか、それがダメなら小さい数をnに代入してみて規則性を見つけてそれを数学的帰納法で示すなど)\nほとんどの参考書ではこの実験を教えてくれないので意識してやれている人とそうでない人で差がつきます。\n\n2　解けそうな解法が見つかったらそれを実行する！\nここでFoucsGoldで習った内容の出番です、あとは知っている解法で解き切るだけです！\n\n数学ではこの２ステップが大事になります、簡単な問題では2から始まることも多いですが難関大の問題ほど1が時間かかるように作られています。つまり過去問を解く前に1の練習ができるFocusGoldより少し難しい参考書をやっておきたいです、おすすめは世界一わかりやすい 阪大の理系数学かハイレベル数学 完全攻略 駿台受験シリーズです(阪大となっていますが東工大と問題が似ているので問題ないです）\n\nここからはFocusGoldの活用法の一例を紹介します！\n受験数学で出題される問題の多くは数学3cから出題されます、つまりそこに時間をかけてほしいです。さらに数3cの各分野に関係する数1a2bも重点的にやるといいと思います(平面上の曲線なら軌跡領域、複素数平面ならベクトル、極限なら数列)\n目安は数1a2bが2周、数3cが3周程が良いと思います！量が膨大で一周に時間がかかる参考書ですのですべて完璧にしようとし過ぎずに程々で2冊目にうつり抜けていたら都度戻って確認する方法がおすすめです。\n\n受験は長期戦です、成績がのびない辛い時期も来るかもしれませんが全ての努力は無駄ではありません！気長に頑張ってください！！"}],["$","div",null,{"className":"flex mb-1","children":[["$","svg",null,{"stroke":"currentColor","fill":"currentColor","strokeWidth":"0","viewBox":"0 0 24 24","className":"text-subPrimary mr-1","children":["$undefined",[["$","path","0",{"fill":"none","d":"M0 0h24v24H0V0z","children":[]}],["$","path","1",{"d":"M12 6c1.1 0 2 .9 2 2s-.9 2-2 2-2-.9-2-2 .9-2 2-2m0 10c2.7 0 5.8 1.29 6 2H6c.23-.72 3.31-2 6-2m0-12C9.79 4 8 5.79 8 8s1.79 4 4 4 4-1.79 4-4-1.79-4-4-4zm0 10c-2.67 0-8 1.34-8 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