I have had a lot of people ask me about my timeline and how I actually taped the cardstock together. Here is my very first youtube video explaining it. Don't ask me how I knew to fold and tape it like this. I guess you can attribute it to many years of DVR'ing and midlessly watching craft shows. So, Carol Duvall eat your heart out....
Below is a visual hopefully further illustrating my point in the video.
One thing that I didn't mention in the video (there were a lot of mistakes and slips of tongue...sheet of tape?!? I have new respect for people who are on DIY television shows..aaaaanyyyywaaaayyy....)
I used only 1 piece of tape per fold (in the middle of each index card) on the video. If you're taping a larger (8.5x11") sheet of cardstock you obviously want to use 2 or 3 pieces of tape (top, bottom and possibly middle) per fold. If you want to tape in 3 spots you may want to tape it at just the top and bottom, draw your line, and then go back and add that middle piece of tape because even a Sharpie or Magic Marker is not going to want to mark over a piece of tape.
Since we're on the topic of timelines you also may be interested in my book of centuries that I created. I have not really used it much with my girls since it is a little more abstract but plan to use it eventually when they're a little older and no longer need concrete manipulatives illustrating the consecutive dates in that of a real timeline. You will need to print this front and back and be warned it is A LOT of pages.