What you'll accomplish
By the end of this guide, you'll have used HeyGen to create a short AI avatar video explaining a concept to your students — without a camera, a recording studio, or video editing skills. Post it to Google Classroom for absent students, use it as a flipped classroom introduction, or build a library of on-demand mini-lessons.
What you'll need
How-To Guide: Create AI Explainer Videos for Your Students
Before opening HeyGen, write your script. This is the key step — the AI avatar reads exactly what you write, so the script IS the lesson. Keep it under 3 minutes for student attention spans (roughly 350-450 words).
Fast script method: Open ChatGPT and type:
Write a 2-minute script for an educational video explaining [concept] to [grade] students. Use simple language. Break it into 3-4 clear sections. End with a review question for students to think about.
Copy the script to a Google Doc for editing.
What you should see: A clean, conversational script in plain language.