Yeah, i ditto the last response. The best way to memorize pathways is to write down the substrates, products, cofactors and enzyme names for every reaction. If there is a specific electron pusing mechanism that you can write out, visualizing the molecules will help you understand the pathway as well.
One assignment that we had in my class was to take a very big piece of posterboard and draw out all of the biochemical reactions taking place, in order to see the connections. It's pretty tedious, but it's really informative.
Unfortunately, there's no simple way around the memorizing, especially if your class covers plant/fungi biochemistry (ogg....plants ).