Step-by-step solutions and grading for middle and high school math, physics, and English 中学・高校の数学・物理・英語を、一歩ずつ解説し、採点する

Students see each step of a solution explained at their level. Teachers get answers scored against their own rubric, with the step where the reasoning went wrong marked. The teacher always has the final say on every grade.

生徒には、学年に合わせて解き方を一歩ずつ説明します。先生には、ご自身の採点基準で答案を採点し、考え違いをした箇所を示します。最終的な点数は、必ず先生が決めます。

In development. Not yet open to the public. 現在開発中です。一般公開はまだ行っていません。

Example of a graded answer: the student divided by g instead of 2g. Two of four steps are marked correct, the substitution and the final answer are marked wrong, and the comment gives the correct height of 10 m. Score: 2 out of 4. 採点例：生徒は 2g ではなく g で割っています。4 行のうち 2 行が正解、代入と答えが不正解で、正しい高さ 10 m がコメントで示されています。得点は 4 点中 2 点。

Q.A ball is thrown straight up at 14 m/s. How high does it rise? (g = 9.8 m/s²) 問ボールを真上に 14 m/s で投げ上げた。最高点の高さは何 m か。(g = 9.8 m/s²)

What it doesできること

Solutions解説

Send a problem as text or a photo. You get a full solution that has been checked against its own answer, with every step explained for the student's grade.

問題を文字か写真で送ると、答えを検算したうえで、学年に合わせて一歩ずつ解き方を説明します。

Grading採点

Send student answers with your rubric. Each answer gets a score, the step where it went wrong, and a short comment. You can review and change every grade before students see it.

答案と採点基準を送ると、答案ごとに点数、つまずいた箇所、短いコメントを返します。生徒に返す前に、先生がすべての点数を確認・修正できます。

Subjects: math, physics, English. 対象科目：数学、物理、英語

How it worksしくみ

Solutions and grading are drafted by generative AI. Each solution is checked against its own answer before it is shown, and every grade can be reviewed and changed by the teacher.

解説と採点は生成 AI が下書きします。解説は答えを検算してから表示し、点数はすべて先生が確認・修正できます。

Student privacy生徒のプライバシー

The service is built around these rules:

次のルールを前提に設計しています。