For some reason, most all of the Grade Levels at my School are talking about Timelines in Class - did I miss a memo? Anyway, 1st & 2nd Graders are doing timelines about themself and 3rd through 5th are doing historical timelines and famous citizens. Here's a look at two programs that are easy to use and have attractive results:
ReadWriteThink (
http://www.readwritethink.org/files/resources/interactives/timeline_2/) - is one that I rate for the younger grades and up for it's ease to navigate throughout the program. I also like how accessible it is both online and available for tablets. Once launched, select a timeline by date, time or event, title it and away you go. Click or tap on the timeline to add content and adding pictures is really quite easy. I like how you can add the image from your device and then

crop it and reposition it, all to your liking. Moving events on the line is also easy, by dragging and dropping where they need to go. Saving, Printing, Re-Opening and even emailing are all easy to navigate steps for Students. The end result is buttoned up and looks nice. One thing to note, however, is that if you add a 'Short Description', it will stay with the picture on the timeline; however, if you add a 'Full Description', that part will appear on a 2nd page away from the timeline entry. Why not keep them together? When printed, you'll get two pages regardless if you added a 'Full Description' or not. Before printing, change the Print Settings to print the 1st page only, to save paper and ink.
Hstry.com (
https://www.hstry.co/timelines) - is another favorite of mine. A registration is required to get started, so I rate this for the older Students. A Class Code is created and given to Students, who will then signup with name, a username and password. I like how interactive the timelines appear, the themes, fonts and more. It looks very much like a social media page, where you add a banner, a photo and timeline materials like videos, surveys, a variety of texts and pictures and more. Sharing with fellow classmates is also quite easy. As much as this is a great timeline tool, I have also used it with Students as their Digital Portfolios. Nice, overall product.
Two nice timeline options, perfect for 1st Grade Friends and up!