Maja,
It may be any one or combination of the following:
The most likely villain is the PowerPoint slides -- copying them in
PowerPoint and pasting them into Word can increase the size of the Word file
by 2 to 3 or more times
than saving the slides as .png files and then using the Picture command on
the Insert menu to insert them into the Word document
In PowerPoint, open the presentation and switch to Slide Sorter view.
Select the 1st slide you want; click Save As on the File menu (save it in a
folder you can easily find); in the Save As Type, click Portable Network
Graphics (*.png), click Save and then click No when prompted to save every
slide in the presentation; repeat this for each slide making sure you change
the name of each .png file.
Note -- I'm still stuck on PowerPoint 97; your version may have somewhat
different commands but the approach should still work
Then use the Picture command on the Insert menu to insert each one into your
document; it would be best to delete the old graphics in the Word document
before inserting the slides you've just saved as .png files.
Also use the Picture command to insert the .jpg file rather than pasting it
into the document; again, it would be best to delete the old graphic before
inserting the .jpg file.
Other possible but far less likely causes of the increase in your file size
are:
Fast Saves -- Disable this feature by clicking Options on the Tools menu,
selecting the Save tab and unchecking the Allow fast saves checkbox
Embedded True Type fonts --Make sure this is turned off by clicking Options
on the Tools menu, selecting the Save tab and unchecking the Embed TrueType
fonts checkbox
Versions -- Click Versions on the File menu; make sure the Automatically
save a version on close is not checked
Preview Picture --Click Properties on the File menu, select the Summary tab
and uncheck the Save preview picture checkbox
Tracked changes -- If you have turned on tracked changes accidentally or no
longer need to track changes, accept or reject all changes and turn off
Tracking changes (Track Changes on the Tools menu)
Document corruption -- Repost if the other suggestions don't work; this is a
far trickier proposition.
Good luck.
Jon