Common Core Quest is an app (available in both Android and iTunes) that provides students with access to hundreds of quizzes and practice sessions aligned to both ELA and Math CCSS. Targets both Middle School and High School.
This free iPad app is designed for younger children. Using a selection of wordless picture books, children can create their own stories to go along with the images and record them reading/telling the story. A great way to promote creativity and help them to learn the concept of plot development.