Most "AI lesson plan generator" tools are a form wrapped around a prompt you could write yourself. Here's the prompt, so you're not stuck waiting on a specific product's free-tier limit — or if you'd rather skip typing it yourself, this site's own Lesson Plan Generator runs this exact prompt for you.
The template
Copy this into any AI chat tool (the free tier of any major one handles this fine) and fill in the four brackets:
Create a [LENGTH]-minute lesson plan for [GRADE] students on [TOPIC].
Structure it as:
1. Hook (2-3 minutes) — a question or short activity that connects to something
students already know.
2. Direct instruction — the core content, broken into 2-3 chunks with a check
for understanding after each one.
3. Guided practice — one activity students do with support.
4. Independent practice or exit ticket.
Standard(s) this should address: [STANDARD, or "none — just make it solid content"]
Assume a class of mixed-ability students. Flag anywhere the plan should be
adjusted for students who finish early or need more support, rather than
writing two separate versions.
Filled in, as an example
Create a 45-minute lesson plan for 7th grade students on the water cycle. [...] Standard(s): NGSS MS-ESS2-4
What you'll typically get back: a hook involving a real weather event, direct instruction split into evaporation/condensation and precipitation/collection, a guided practice sketching the cycle, and an exit ticket. That's a genuinely usable first draft — the value isn't that it's perfect, it's that you're editing instead of starting from a blank page.
What to check before you use it
- Timing is optimistic. AI-generated timing assumes no transitions, no attendance, no interruptions. Add 5-10 minutes of buffer for a real class period.
- The hook is often generic. This is the piece most worth rewriting yourself — a hook that references something that actually happened in your class last week will beat anything generic every time.
- Standards alignment needs a second look. The plan will claim alignment to the standard you named; verify the actual content matches, especially for math and science standards with specific rigor requirements (e.g., "explain" vs. "analyze" vs. "evaluate" are different cognitive demands).
- Differentiation notes are a starting point, not a plan. If you have an IEP student with specific accommodations, the "flag adjustments" line above will suggest generic ideas (extended time, sentence starters) — cross-check against the actual accommodation, don't assume it's covered.
Reuse it faster
Save the template above in a notes app or a Google Doc you keep open. Swapping four brackets takes less time than opening a new tool, logging in, and re-explaining your class context every time.
Looking for something more hands-on than a text plan? Browse the physics, math, and language activities in Tools & Activities — several are ready to drop into the "guided practice" step directly.
More in this series: Best AI Tools for Teachers · AI Rubric Generation · Differentiated Worksheets