超わかる！授業動画

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【目から鱗の裏技】分散の瞬間計算法！度数分布表から分散を１分で計算するテクニック！【データの分析】変量の変換

度数分布表から分散を30秒で求める計算テクニックを紹介します。分散の変換公式（変量の変換）を応用することで、扱いにくい３桁の計算が一瞬で１桁の暗算に！変量の変換は下の動画からご覧ください。 ✅変量の...

2020-12-21 18:00:03 有 11,745 人看過有 656 人說讚

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沈殿生成反応【無機化学重要反応式】超！時短演習＃6

沈殿生成反応で聞かれる部分は！ ✅沈殿する物質だけでなく、色も答える問題が出てくる！（完答の問題が多くなってきている） ✅硫化物イオンは液性によって反応するイオンが限られるから注意して判断しよう！ ...

2020-12-20 18:00:08 有 4,170 人看過有 84 人說讚

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遊離反応【無機化学重要反応式】超！時短演習＃５

遊離反応の根幹は！ ✅弱酸由来の塩＋強酸→強酸由来の塩＋弱酸 ✅弱塩基由来の塩＋強塩基→強塩基由来の塩＋弱塩基 ✅揮発性酸の塩＋不揮発性酸→不揮発性酸の塩＋揮発性酸 🎥この動画の再生リストはこちらか...

2020-12-19 06:00:07 有 3,671 人看過有 76 人說讚

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２次関数と１次関数の融合問題【中学数学】２次関数＃５

２次関数と１次関数の融合問題（放物線と直線）のポイントは！ ✅y=ax^2 の a の値は、通る点が１個わかれば求まる！ 🎥関連動画🎥 ✅１次関数の式の求め方 ▶https://youtu.be/k...

2020-12-17 18:00:01 有 4,771 人看過有 95 人說讚

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酸化剤・還元剤【無機化学重要反応式】超！時短演習＃4

酸化剤・還元剤の半反応式の根幹は！ ✅半反応式はすべて覚えずに、主になっている反応を押さえて、水素イオン、電子、水を追加して毎回作っていこう！ 🎥この動画の再生リストはこちらから🎥 https:/...

2020-12-16 18:00:10 有 10,509 人看過有 351 人說讚

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変量の変換（全部盛り）【高校数学】データの分析＃２５

変量の変換のポイントは！変量 x に対して、新しい変量 u = a x + b を用意したとき ✅u の平均は、x の平均を a 倍して b を加えたもの ✅u の分散は x の分散を a² 倍した...

2020-12-14 18:00:04 有 42,424 人看過有 2,474 人說讚

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Function: _error_handler

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酸化物と酸・塩基【無機化学重要反応式】超！時短演習＃3

酸化物と酸・塩基の根幹は！ ✅金属元素の酸化物に酸を加えると水が発生する！ ✅非金属元素の酸化物に塩基を加えると塩と水が発生する！ 🎥この動画の再生リストはこちらから🎥 https://www.yo...

2020-12-13 06:00:06 有 3,899 人看過有 73 人說讚

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"たかが受験問題"という逆転の発想。

どんな受験問題にも答えがある。この前提から切り込めば、手掛かりは必ず見つかる。 🎁高評価は最高のギフト🎁 私にとって一番大切なことは再生回数ではありません。このビデオを見てくれたあなたの成長に貢献で...

2020-12-12 11:01:12 有 6,670 人看過有 156 人說讚

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【勉強LIVE】2020/12/12 7:30～8:30

🔥勉強ライブとは…？化学担当たくみが勉強している姿を生配信！一緒に勉強することで、やる気・集中力を高めることを目的としたイベントです！ 🤔なぜ１時間なの…？「長く勉強すること」ではなく、短時間でも...

2020-12-12 07:35:01 有 2,507 人看過有 16 人說讚

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酸化物＋水【無機化学重要反応式】超！時短演習＃2

酸化物＋水の根幹は！ ✅金属元素の酸化物ならO²⁻＋H₂O→2OH⁻が基盤になっている！ ✅非金属元素の酸化物に水を加えるとオキソ酸が発生する！ 🎥この動画の再生リストはこちらから🎥 https:/...

2020-12-10 18:00:18 有 3,464 人看過有 79 人說讚