Hello and welcome Richard!
I have some not very good news for you I'm afraid.Not want you want to hear with an early posting. Mind you, there's usually a way of doing/solving everything in Moodle, with a bit of creativity, even if it's not the ideal method!
The only import option is powerpoint (and if you are using Moodle version 1.9 or below this basically doesn't work anyway).
Firstly copying straight from Word is not great as Word adds tons of extraneous code. There is a Word code stripper in the Moodle editor but this is not infallible, so it's better to copy the Word file, then past into word pad or note pad, convert to plain text and copy that before pasting into a lesson. This is likely to lose you your graphics.
A quick and dirty solution is to save each pdf page (and convert your word files to pdfs too for this same purpose) as an image file and then just have that image file only within a lesson page. I've already posted some info about this in a previous thread (you'll need to read both my posts in here as I've also suggested a way to speed this process up).
If you save pdfs as images and import them, you will retain the crucial formatting and image positioning.
Another alternative is don't have lessons, convert the pdfs (and also save the word docs as pdfs first too) and save/share these as movie files and get the students to work through them screen by screen.
Sorry it's not great; this is a common ask in here. BTW I hope you mean '= 1 lesson page' not '1 lesson' otherwise you must have humungous Word files.
Lynn Scarlet