Unit 2. Lesson 1 - Definition and Principles in Materials Evaluation 

Hello Miss Mars~ Do you have any source on what are the things to consider in evaluation?

HELLO Miss Mars, do you have a downloadable copy of your ppt in this discussion?

Hi Ms Mars. I have been studying in this area but I do not find any documents about the approaches to material evaluation. Can you make a video or send me some references about this topic? Thank you so much. Hope to see your respones.