Warning: This post was published more than 12 years ago.
I keep old posts on the site because sometimes it's interesting to read old content. Not everything that is old is bad. Also, I think people might be interested to track how my views have changed over time: for example, how my strident teenage views have mellowed and matured!
But given the age of this post, please bear in mind:
- My views might have changed in the 12 years since I wrote this post.
- This post might use language in ways which I would now consider inappropriate or offensive.
- Factual information might be outdated.
- Links might be broken; embedded material might not appear properly.
Many thanks for your understanding.
This is something I’ve been wondering about for a while. I don’t think that these would have any effect if only used for a little while at a time, but if they are placed in all classrooms and are expected to be used for long periods each day, then it’s clearly not going to be good for teachers’ eyesight. Every time I’ve used them, the bright light has annoyed me. I’m certain that this is a greater health risk than the chalk dust from a good old black board. But this is a cleaner solution, and therefore necessarily better in the eyes (no pun intended) of some.