I have the same feeling sometimes. I am a new teacher in my second year. The more meeting and professional development days I attend, the more I feel as though I don't know really know anything. I like to think that all teachers have "those days" when they're overwhelmed. I'm sure that with the ever-increasing technological capabilities that exist and that will be developed in the future, experienced teachers probably feel as though they don't know anything with regard to new technology in the classroom.
One of the more experienced teachers in my department--a teacher of 11 years--got a SMART Board this year, along with the rest of the English department, and after having used it very seldom, she opted to give up her SMART Board so that a teacher who was more knowledgable about the technology and who would have more fun using it could have it. She just didn't have the time, energy, or knowledge to work with the SMART Board and learn how to use it comfortably, so she wasn't able to embrace it. I, on the other hand, picked up the SMART Board right away, and I use mine every day.
The special ed. teacher with whom I teacher half of my classes also embraced the technology, even though she has been teaching for 26 years! She said that she was encouraged to use it more because I used it a lot. She had a blast learning to use it because she wasn't afraid to screw up or look foolish in front of the students, so I was able to teach her
while I was teaching class! I guess the way a person feels about learning depends upon his/her experiences. I'm sure everyone feels a little stupid sometimes.
