Some of the best ways to help you memorize a script, include reading it out loud repeatedly, monologue while motoring, always think positively and do not panic. Additionally, you need to create some flash cards with the main leading points that can help to remember other parts of the script or make sure you understand the script from which you should pick guiding points.
You have waited too long to study. There is NO shortcut to memorization; there is only memorization. You have 2 choices: admit failure (quite mature), attempt an all-night-brain-squeeze-memorizer which has pretty much a zero percent chance to work. You've messed up, buddy, and there ain't no helpin' ya.
Try to remember the heading like: shampoo sun silk is orange, use for damage hair. But if history and stuff, remember only the year and days soon you will figure the months. It work out for me (perhaps I got 96 percent out of hundred)
good luck. Lol i have near photographic memory, so it's easy for me. just try repeating things to yourself over and over and dont TRY to memorize it, just keep repeating it and repeating it and repeating it to your self. if you HAVE to memorize some parts (bc you only have one day) i would only learn the transitions and the MAIN topics in between that, all the other stuff should fall into place. I have a website for your future use (it's lengthy, but helpful) - http://www.wired.com/medtech/health/magazine/16-05/ff_wozniak?currentPage=all
by not trynna think so hard about what you have to say and just set a time for yourself and then pratice for a certain amount of time then give it a brake and try again the next day around the same time.
Have a friend or family member say a line, and then you repeat it. Do this over and over again with each part until you make no mistakes, then move on to the next part and repeat. It really does work, not just with languages but with poetry and stuff like that too :)
Here's what helps me for my highschool drama class && presentations too!!: Memorize one senatance, memorize the next, then go back and say them both together, then learn the next sentance, && go back to the begining say it again, keep the cycle going till you've got it memorized totally through(One line learned, now do it from the begining, one more lined learned and then do it from the begining) BTW this way is totally energy sucking and will probably drain you easy:D Though you're pretty much garenteed to never forget it.
read part by part and be your character. if you feel what they are feeling, the words and acting will come to you bc it will make alot more sense.. that's what i do for drama and i have a monolog to preform tomorrow and i remembered it :) good luck and have fun
Kep reading and then practice without it and If you forget practice some more and do that cyclically and when you reach your goal, to remember everything, stop. Then practice some more later. :D -Welcome-