You can download Engineering Technology videos from various sites, which are listed here.

PVC pipe bending practical in in A/l Engineering Technology 

Production Technology Practical – Video Playlist

Jathika Pasala AL Technology 2014 Lesson 10

What is Engine?

Download Practical Guides – from NIE website

Biosystems Technology (Practical Activity Manual)
Bio Resource Technology Reference book
Grade 12 Engineering Technology – Practical Activity Manual (2017)
Grade 13 Engineering Technology – Practical Activity Manual (2018)

Srimal wijesinghe – Engineering Technology (පිලියවනයක ක්‍රියාකාරිත්වය )

Srimal wijesinghe – Engineering Technology ( අර්ධ තරංග සෘජුකරණය දෝලනේක්ශයක් ඇසුරින් පරීක්ශා කිරීම )