AI Lesson Plan Generator: How to Get a Plan Your Class Can Use
What to give an AI lesson plan generator so the plan fits your class, a five-minute check before you teach it, and a Grade 6 ratio example.
An AI lesson plan generator will give you a plan in under a minute. In my training sessions, the first plan a teacher generates is almost always for the wrong class: the right topic, the right grade on paper, and activities that would not survive ten minutes with the 32 students she actually has.
The fix is not a better generator. It is giving the generator what a good colleague would need before planning for you. This post is the routine I teach: what to put in, what to check when the plan comes out, and a filled Grade 6 example.
What an AI lesson plan generator needs from you
Think of the generator as a new teacher on their first day in your school. Knowledgeable, fast, and with no idea who is in your room. Whatever you would tell that teacher, tell the generator.
| Input | Weak version | Strong version |
|---|---|---|
| The class | "Grade 6" | "Grade 6B, 32 students, eight still unsure of equivalent fractions, four with English as a second language, two who finish early and get restless" |
| The topic | "Ratio" | "Introduce ratio notation and simplify ratios, textbook chapter 7 pages 112 to 115" |
| The objective | "Understand ratio" | "Students can write a ratio from a picture and simplify it, and explain the link to fractions" |
| Time and format | Nothing | "45 minutes, starter, two activities, exit ticket, in English with key words in Urdu" |
| What came before | Nothing | "Last lesson: equivalent fractions. Exit ticket showed eight students could not simplify 6/9" |
The left column produces a plan for a textbook class. The right column produces a plan for yours. The difference is about three minutes of typing, or none at all if the generator can store a class description and reuse it.
The source matters more than the prompt
A lesson plan maker AI that only knows the topic name invents the content. It will teach ratio in the order it has seen most often, not the order in your textbook or your scheme. Point it to the actual pages, the scheme of work, or your own notes, and the plan follows your sequence instead of a generic one. For the same reason, do not ask for "a lesson on photosynthesis" if the exam board you teach calls it something slightly different.
A five-minute check before you teach a generated plan
Every plan from a lesson plan generator goes through the same checklist with the teachers I train. It is short on purpose. If a plan fails two items, regenerate with better inputs instead of fixing it by hand.
- Objective: is it one thing, and can a student show it? "Understand ratio" fails. "Write and simplify a ratio from a picture" passes.
- Timing: add up the minutes. Generators often produce 60 minutes of activity for a 45-minute lesson.
- The starter: does it connect to last lesson, or to nothing? Replace it if it is a generic "ask students what they know about ratio".
- The main activity: can your room do it? Group work of six needs tables that move. A video needs a projector that works.
- Differentiation: does it name your groups, or say "support weaker students as needed"? The second is not a plan.
- Check for understanding: is there a moment, before the bell, when you find out who got it?
- Vocabulary: are the key words listed, and in the language your students need?
If you want the objective part to be strong every time, read how to write lesson objectives students can actually reach.
A filled example: Grade 6 ratio
Inputs: Grade 6B as described in the table. Topic from textbook pages 112 to 115. Last lesson's exit ticket data. 45 minutes. Here is the shape of a plan that passed the check.
- Objective: Students can write a ratio from a picture, simplify it, and explain how simplifying a ratio is like simplifying a fraction.
- Starter (5 min): Three fractions on the board to simplify, including 6/9. Mini whiteboards. The teacher notes who still cannot simplify.
- Teach (10 min): A picture of 4 red and 6 blue counters. Write 4:6. Simplify to 2:3 next to 4/6 to 2/3. Key words: ratio, part, simplify, in English and Urdu.
- Activity 1 (12 min): Pairs write ratios from six pictures and simplify. The eight students flagged by the starter work at one table with counters and the teacher.
- Activity 2 (10 min): Each pair makes its own picture for another pair to turn into a ratio. The two early finishers get ratios with three parts.
- Exit ticket (5 min): Two pictures to write and simplify, and one sentence: "Simplifying a ratio is like simplifying a fraction because..."
- Resources: Counters, mini whiteboards, pages 112 to 115, exit ticket printed.
Nothing in this plan is clever. Everything in it is possible in Grade 6B on a Tuesday. That is the test.
What a generator cannot do
I say this in every session, because the hype suggests otherwise. An AI lesson plan generator does not know your students unless you tell it. It cannot tell you if the lesson worked. It will write confident activities for equipment you do not have. And it will happily plan from a topic name alone, which is how you get a plan for a class that does not exist.
The teacher decides. The AI drafts. Keep that order and the tool is useful. Reverse it and you will spend more time fixing plans than you ever spent writing them. For a longer look at the "fast plan for the wrong class" problem, see ChatGPT lesson plans: a fast plan for the wrong class is still the wrong plan.
How TeachBuddy AI helps
The lesson plan generator in TeachBuddy AI is built around the strong column of the table above. You describe each class once in a classroom profile: size, groups, needs, language, what they already know. Every plan starts from it, so the "Grade 6B" context is never retyped. You type the topic, then add sources: textbook pages from your Resource Library by page range, the scheme of work, an upload or a web link. Objectives are suggested and you edit them. Duration, format and language are prefilled from the class.
The plan records what it was built from, so a head of department can see the pages behind it. From the plan, slides, a worksheet or a quiz are one click away. After teaching, a two-minute reflection asks what landed, and TeachBuddy AI proposes updates to the class profile that you approve item by item. The plan is free for teachers; the class is yours.
Frequently asked questions
Is there a free AI lesson plan generator?
Yes. TeachBuddy AI is free for teachers and includes the lesson plan generator, classroom profiles and the Resource Library. Whatever tool you use, the plan is only as good as the class description and the sources you give it.
Can an AI lesson plan generator follow my textbook?
Only if it can read the textbook. Look for a generator that accepts the actual pages or a scheme of work as a source, not just a topic name.
How do I know if an AI lesson plan is any good?
Run the seven-point check above: objective, timing, starter, activity, differentiation, check for understanding, vocabulary. A plan that names your groups and your pages is usually good. A plan that could be for any class usually is not.
Ready to plan for the class you actually have? Create a free TeachBuddy AI account, describe one class, and generate your next lesson from your own textbook pages.
Hira leads training and customer success at TeachBuddy AI. A school leader and teacher trainer, she writes practical, step-by-step guides on planning, assessment and classroom routines.