Animoto is an easy-to-use video/slideshow/animation app. You can sign up as a teacher and get 50 educational accounts to share with your students. This allows them to create videos up to 5 mins long for free (whereas the limit is 30 sec for the free regular access). See one of the digital literacy coaches if you need support on how to create students accounts etc.
GoAnimate for Schools
GoAnimate is a suite of web applications that lets you make amazing animated videos easily. Produce a video in minutes without drawing or using a camera.
An alternative to the recently discontinued Xtranormal.
Educators' pricing available - may be around $100 for 50 students.
DoInk app for iOS
Links for great tech tools to facilitate teaching & learning. For curated lists of sites, click on "Web Tool Collections" in the menu below. Those sites will then come to the top of the page.