How I Use It
Adobe Spark can be an extremely useful tool for evaluation at the end of a unit. Once students get used to the interface and have used it a few times, they can easily create presentations that highlight the main ideas, vocabulary, important figures and events, etc. that THEY took from the chapter/unit. This is great for helping teachers become better acquainted with how each student learns and what they seem to take away most from class.
Since students can create several Spark pages by the end of a year, it is a great way to showcase a student portfolio. Unlike with PowerPoint, students have the ability to easily and immediately share presentations via Social Media, e-mail, and more, which gets them engaged faster. This also aids in the grading process!...no more downloading projects, just click each link.
Which brings me to a constructive criticism, it would be great if Spark allowed for following other users (such as your students) or the creation of "groups" where a teacher could essentially create a classroom and invite students to join. Also, from an art teacher and graphic designer's perspective it would be nice to have more creative reign over fonts, layout, objects/elements, etc.