教师用AI：8个免费工具省一半备课时间
备课、出题、批改占用教师的晚上时间。
AI for Teachers 2026: 8 Free Tools That Cut Lesson Planning Time in Half
Teachers spend 10-12 hours a week on planning and grading. In 2026, a set of free AI tools can cut that substantially - the key is knowing which tasks AI handles well and which it does not.
The 8 Free Tools
1. MagicSchool AI (magicschool.ai). Built for teachers: lesson plans, rubric generators, quiz makers, IEP drafters. Free tier covers most classroom needs. The most teacher-specific option.
2. Diffit (web.diffit.me). Paste any text or topic, get leveled reading passages, vocabulary lists, and comprehension questions at different grade levels. Brilliant for differentiation.
3. Brisk Teaching (Chrome extension). Works inside Google Docs/Classroom: gives feedback, creates slides from documents, levels texts. Free for teachers.
4. Khanmigo (Khan Academy). AI tutor for students AND lesson support for teachers. Free for teachers in the US through partnerships; limited free elsewhere.
5. Curipod. Generates interactive lessons and polls in minutes; free tier for basic use.
6. Eduaide.AI. Lesson plans, assessments, and feedback; free tier includes a decent monthly quota.
7. Canva Magic Write. Not teacher-specific but free for education: worksheets, posters, and visual aids generated from prompts.
8. ChatGPT free tier. With a good prompt, it drafts lesson plans, multiple-choice questions, and rubrics. Free but generic - add your curriculum standards to the prompt.
What AI Does Well vs Poorly
| Task | AI quality | Notes |
|---|---|---|
| Lesson plan first draft | Excellent | Add your standards and adapt |
| Quiz/worksheet generation | Excellent | Verify answer keys! |
| Differentiated readings | Excellent | Diffit is the best |
| Grading essays | Fair | Use for feedback, not final grades |
| Classroom management | Poor | Human judgment required |
| Personal student relationships | Poor | Never automate this |
Prompt Template for Lesson Plans
"Create a 45-minute lesson on [topic] for [grade]. Include learning objectives, a 10-minute hook activity, main instruction, group work, and an exit ticket. Align to [standard]. Output as a table."
FAQ
Is it ethical to use AI for teaching materials? Yes - teachers have always used resources; AI just generates them faster. Check your district's policy.
Do these tools protect student data? Education tools like MagicSchool and Brisk have school-data agreements; avoid entering student names in consumer chatbots.
What is the fastest win? Diffit for reading differentiation - it turns one text into five reading levels in under a minute.
