HP 35s demonstration videos on Youtube

[Marcio]

Logan, I think one can actually edit an expression in ALG mode on the 35s, see the first video at 0:50.

Also, you mentioned that the 35s can't do matrices (starting at 12:11), while true, I think you could haved added that it can solve systems of linear equations (up to 3x3) and could have also mentioned bug 18. Of course this only a suggestion.

I like your videos.