One of my favorite apps is Educreations. This app belongs in the category of "Evergreen apps", a term I was introduced to by Tom Daccord at ISTE 2014. Evergreen apps are non-subject apps that can be used to create. The creation features in Educreations include drawing, writing, using images and speaking.
Here are some examples:
|4th graders were working with unit conversions|
|1st graders illustrated fact families|
|K's wrote a number, then those that come before/after|
|1st graders worked on addition|
|Recording and reflections on a poem|
All work is saved as videos, allowing for voice narration. Using a free classroom account, teachers can model tasks for students. The recordings are easily shared with students. These lessons can be a great way to provide support for work in centers or to individual students based on their needs. All student work gets sent to the teacher.
I think of Educreations as a digital whiteboard with loads of extras. In the SAMR model, it definitely can be used for Redefinition of tasks.