Hi, i used to teach Engineering subjects to 16-18 year old apprentices and i remember being in your position asking people for fun/interesting ideas on how to teach beam bending theory. I had a great lesson plan in front of me the first time i came to teach it, I had a Powerpoint presentation...
Where are you from? From your post it sounds like English isnt your first language.... if you have recently moved to another country maybe part of the problem could be cultural differences? I've worked in a few countries and found that sometimes people can come across as being rude or ignorant...