Did you know that you can Try Collector for free? In this blog post, I take you through using Collector for the first time. Install the app on your device, open a sample map, and off you'll go collecting data about your local park. Give it a try, then come here to discuss it.
Hi Priscilla! Good question... unfortunately, the map isn't publicly available. So while you can access it through "Try it" in Collector, you can't also view it in the browser with ArcGIS Online.
For working with your students, I'd suggest making your own map. In fact, I teach how to make the same map in another blog: Make your first Collector map
To see the same map in Collector and in a web browser you'd have to log in to Collector instead of using the trial experience, though.