Fraction Mash is a free iPad app that provides a fun way for students to learn about fractions. The app lets students insert two pictures then divide those pictures into grids, columns, pie slices, triangles, or rows. Once their pictures have been divided students select the portions of one picture that they want to combine with the other picture. Students' selections of image portions must equal 1 when the two images are combined. Fraction Mash lets students choose how many pieces each picture is divided into.
When students have completed their image-based fractions problems they can save them to the camera rolls on their iPads. From there they can share them with you in a variety of ways including through Google Classroom. But there is more that your students can do with the fractions mash-ups they make in Fraction Mash. Fraction Mash includes an option for students to write reports about their fraction mashes. The reports templates let students insert the images and the fraction problems they created into their reports. They can then write about the fractions problems that they created and solved. Those reports can be saved and shared with you.
Fraction Mash does offer advertise an online classroom space, but it wasn't working when I tried it. You'll probably do just as well to have your students share their work with you through Google Classroom or another LMS client that is installed on your students' iPads.