For teachers, the useful version is usually short and repeatable. A three-minute recap that students actually finish is better than a polished fifteen-minute file nobody replays.
Focus on recap value
An audio review should reinforce the most important points from a lesson. Keep definitions, formulas, examples, and common mistakes, but remove classroom-only instructions.
Make audio easy to assign
Short files are easier for students to complete. Aim for three to seven minutes per topic and include a clear title that matches the lesson name.
Add listening prompts
Before the audio, give students one or two questions to answer while listening. This turns passive playback into active review.
Before you publish
- Keep one lesson per file
- Use plain language
- Add review questions
- Link audio with the original handout
Multilingual quick notes
A simple way to try it
Start with one short paragraph from your own project. If the sample sounds clear, keep that version of the script and then record the full MP3. It is much easier to fix one paragraph early than repair a long file at the end.