単位図鑑 vs MathFormulaQuiz

「1キロってどのくらい？」 「1リットルって何杯分？」 お子さまのそんな疑問に、身の回りのモノで答える単位の図鑑です。 --- 単位図鑑ってなに？ --- テストで「身長170km」と書いてしまう。 プールの水の量を「3mL」と答えてしまう。 単位の計算はできるのに、日常の感覚と結びついていない。 そんなお子さまのために作りました。 単位図鑑は、35の単位を1,000以上の「身近なたとえ」で体感できるアプリです。 --- 7つのカテゴリ --- 長さ（mm, cm, m, km） 重さ（g, kg, t） かさ（mL, dL, L） 面積（cm2, m2, a, ha） 速さ（時速km） 時間（秒, 分, 時間, 日, 年） 温度 --- 3つの学び方 --- 図鑑で見る 毎日変わる「きょうのたんい」で新しい発見。 カテゴリをえらんで、好きな単位の「たとえ」を見てみよう。 1つの単位に30個のたとえがあるから、何度見ても新しい発見があります。 自分で調べる 好きな数字を入れると「それってどのくらい？」に答えてくれます。 「50度ってどのくらい？」→「おふろよりちょっとあついおゆ」 クイズで遊ぶ 「サッカーコートと新幹線、長いのはどっち？」 くらべっこクイズで、単位の感覚がどんどん身につきます。 --- 保護者の方へ --- 広告は一切ありません アカウント登録は不要です 個人情報の収集はありません 学習データは端末内にのみ保存されます カテゴリ別の学習進捗を確認できます --- 今後のアップデート --- さらに多くの単位やたとえ、新しい機能を追加予定です。 --- こんな方におすすめ --- 中学受験を控えているお子さま 算数のテストで単位を間違えてしまうお子さま 「1kmってどのくらい？」に答えられないお子さま 楽しみながら単位を学ばせたい保護者の方 開発：さんすうがく（https://sansugaku.net）

You know the formula. Then the problem appears and you are stuck. Most mistakes in maths come down to two questions: which formula applies, and what goes where. Math Formulas & Quiz puts a formula reference and a problem set in one app, so you can look a formula up, practise it straight away, and jump back to it the moment you get something wrong. ■ 226 formulas, algebra to calculus Expansion and factoring, quadratic functions, sets and logic, trigonometry, data analysis, counting and probability, geometry, integers, proofs, complex numbers, coordinate geometry, trigonometric functions, exponentials and logarithms, differentiation and integration, sequences, and statistical inference. Sixteen units, organised by subject, then unit, then formula. The course follows the Japanese high-school curriculum (Math I, A, II and B), and every formula, problem and explanation is fully available in English. ■ An explanation and an example for every formula Each formula comes with a short explanation of what it means and when to use it, including the slips students make most often. All 226 have a worked example with the substitution and every step shown. 95 formulas also list the conditions they need, and 20 geometry formulas include a diagram. ■ 2,000+ multiple-choice problems 2,087 problems, written for specific formulas, so you can drill exactly the one you need. Choose the range: everything, a subject, a unit, a single formula, your favourites, or your weakest formulas. Sets are 10, 20 or 30 questions. ■ Step-by-step solutions The solution opens as soon as you answer. Every calculation follows the same order: the formula, what to substitute, the working, the answer. Every step shown was checked by computer algebra. From a solution you can open the formula it used, and from a formula you can go straight to its problems. ■ See where you are weak Overall accuracy, accuracy by subject and by unit, best streak, and recent sets. Units are listed from lowest accuracy up, so you know what to review next. Pick "Weakest" to practise your three lowest-scoring units. ■ 27 achievements Sets played, lifetime correct answers, streaks, perfect sets, accuracy, correct answers per subject, consecutive days and formulas viewed give you the next goal to aim for. ■ Handy tools - Search by formula or unit name - Save favourites and quiz yourself on them - A built-in normal distribution table - Adjustable formula text size - Two colour themes, Paper and Night - Sound and haptics you can switch off - One reminder a day, at 7:30 AM or 7:30 PM on alternating days (you can turn it off) ■ Who it is for - High-school students preparing for tests and entrance exams - Anyone who wants to check a formula with a worked example - Adults returning to maths ■ No ads, works offline There are no ads, no account and no sign-in. Every feature works without a connection, and your progress stays on your device. ■ What is included - Math I: 79 formulas (Numbers and Expressions, Sets and Propositions, Quadratic Functions, Shapes and Measurement, Data Analysis) - Math A: 44 formulas (Counting and Probability, Properties of Figures, Properties of Integers) - Math II: 70 formulas (Expressions and Proof, Complex Numbers and Equations, Figures and Equations, Trigonometric Functions, Exponentials and Logarithms, Differentiation and Integration) - Math B: 33 formulas (Sequences, Statistical Inference) Total: 226 formulas and 2,087 problems