Here's another slide from my session at our ELT Conference last Saturday…
In fact I always suggest this to trainees on our CELTA courses: CELTA can be quite a stressful course, and it gets especially so if you waste an hour or more looking for images that may in fact be adding little or nothing to your class, if they are not going to generate a lot of language — which in the end is always our aim.
As I suggested in the session, I'd in fact like to ban Google Images entirely from the school: it's Google Images that should be blocked, not potentially hugely communicative places like Facebook, or fabulous ones for material like YouTube, access to which school and systems administrators have been known to block, or brilliant tools like mobile phones, which learners could be doing so much with if we didn't impose blanket bans on them.
To my CELTA trainees (I in fact only give one session on their course, on technology) I suggest two other things that would also help reduce the stress level:
You don't — ever! — need 30 or 40 PowerPoint slides for a 45-60 minute class: pare that back to 5 or fewer. Reduce the material to its minimum expression: one great image is going to generate way more language and interaction than 25 or more boring ones of things you could point to, or draw on the board, to pull out of your pocket, or translate…
And if you can reduce your photocopying to less than one page per student per class, you'll also be doing yourself a favour, not to mention the environment.
There's another thing I also often find myself saying to people taking CELTA (and our equivalent course for Spanish teachers): you're training to become a teacher, not a graphic designer or a materials designer.
What you want to be designing are the task/s, the interaction, the social experience of learning. Focus on that, not the materials.
What's that? You want to use the scanner? Are you sure it's worth while in terms of how much more language your learners are going to get for your efforts…?