Though not free ($1.99), this is almost like an entry level screencasting app where students draw and then tell the story about their drawing. Completed projects can be shared.
Great FREE reading app for pre-school/early readers. Students work through puzzles and games for each letter of the alphabet and build their vocabulary.
Use the app to create and manipulate 3D objects. They can then be printed out as flat nets and turned into physical objects. This is fantastic for teaching elementary students spatial skills.
I have been teaching for over 10 years in a variety of contexts. Most recently, I left my position as Director of Academic Technology at St. Michael's Country Day School and joined EdTechTeacher as their Senior Associate.