High school sub plans: math

One math lesson for every period of a high school day, with no prep: a five-minute bell ringer, then a two-step equations sheet with its key, a partner check, and an exit ticket at the door. The timetable runs 7 periods of 50 minutes; the lesson fits each one.

Checked October 30, 2026. Made from Peabody Teach's own passages, worksheets and brain break cards.

Make the whole day at high school ▸

The lesson, every period

Math: two-step equations

First 5 minutes, the bell ringer: write these on the board and solve them together, asking a student to explain each step: 9x + 13 = 112, x; 3x − 16 = 5, x; x ÷ 2 + 9 = 17, x.
Next 30 minutes: Hand out the two-step equations sheet (16 problems). Print 24; the key is on its own page.
Students work on their own for twenty minutes, then check with a partner.
Early finishers write three problems of their own and swap with a neighbor.
Last 10 minutes, the exit ticket: students solve two more problems from the board on a scrap of paper with their name, and hand it to you at the door.
Collect the work for each period in its own pile, with the period written on top.

📄 Two-step equations (sheet and key)

The sheets, on their own pages

Two-step equations worksheets: three versions with keys

Subbing high school

High school runs like middle school, a period at a time, with older students who will test whether the plan is real. Say the plan, the task and when it is due in the first two minutes, and hold to it calmly. Many will work alone if the task is clear.

Write the task and what is due by the end of the period on the board before the bell.
Phones follow the school's own rule; ask the office what it is before first period.
If a class says the teacher lets them, follow the plan and leave it for the teacher to decide.

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