Ahh, the days of the slide rule! We learned math a whole different way, just to accomodate the tool. And I even know where my slide rule is, and have the 1947 K&E slide rule that was my dad's. Leather case and all, but somewhere the glass slide was cracked.
I also remember my first scientific calculator, and yes it was a HP! Bought for me by my rich uncle before I went off to engineering school. For the longest time I used the slide rule to make sure the calculator was correct!
So I really enjoyed the irony of the slide rule tutorial at the Museum of HP calculators.
Have fun with the slide rule, Cody! I'd be interest to hear if you could figure it out on your own!