Math Learning Center provides a variety of MATH APPS for elementary students including Fractions, Geoboard, Number Line, Pattern Shapes, Number Pieces, Number Pieces Basics, Number Frames, Number Rack, Money Pieces, and Math Vocabulary Cards.
Each app is available for ipads and chromebooks and uses a similar toolbar so moving between apps is easy for students. Just go to the App Store and search for Math Learning Center. All of the apps will show in the results list - install one or all of them! They're FREE!