Mathematics
Algebra — Chapter 1
Using a letter for a number you do not know yet, and solving for it.
Scan the code.
Watch the concept.
Understand it.
Every chapter carries a printed QR code. Point a phone at it and the lesson opens.
No app · No login · Any phone camera
1
Print and place
Put the QR sheet where the chapter is taught.
2
Student scans
Any phone camera opens the lesson page.
3
Watch and repeat
Pause, rewind, watch again at home.
Lessons
Each lesson has its own QR code.
