AI Video Explanation Demo
How a HeyGen/Synthesia avatar explanation would appear to students
Maths — Money
I bought 8 small packets of sweets. I was given £0.20 change from £7. How much did each packet cost?
A) 88p
B) 95p
C) 86p
D) 85p
E) 75p
👩🏫
Miss Sarah explains...
Solving money problems step by step
1:42
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How AI Video Generation Works
1
Script generated from the explanation steps — same data you already have
2
Send to HeyGen API — choose avatar (teacher character), voice, and language
3
Video rendered in ~2-3 minutes, returned as MP4 URL
4
Stored & embedded — student clicks play to watch the avatar explain
Cost: ~£0.50-1.00 per video (HeyGen) or ~£1.50 per video (Synthesia)
For 200 questions = ~£100-200 one-time cost for full video library
Alternative: The animated slides demo (previous page) gives 80% of the value at £0 cost. Videos are a premium differentiator — add later when revenue supports it.