This video gives you an idea of how to prepare to use Lumio in the classroom for the first time. You can certainly use Lumio as a simple presentation tool from your smartboard. However, this video focuses on the ability to allow students to interact with the activity from their chromebook as well.
Even if you don't have a Smartboard in the classroom, you can take advantage of the resources that are available through Lumio! Check out all of the ready made stuff available and work your way up to making your own stuff. There is a limit to the amount of storage for the free version.
This is a tool within Lumio that allows you to create your very own drag and drop fill in the blank activities. You have a lot of flexibility with this including changing the background images.
There is not currently a perfect solution for this but there is a fairly descent workaround. Check out this video to learn how to print Lumio slides.