Information on how to help your student develop number sense, and have success when struggling with addition
apps
https://www.classroomfocusedsoftware.com/numbersense.html
articles
https://www.teachallkids.com/node/94
https://www.thoughtco.com/ten-frames-to-teach-number-sense-3111121
videos
https://www.youtube.com/watch?v=X_mTtbxyRpQ
https://www.youtube.com/watch?v=ewefGUhsfmc
https://www.youtube.com/watch?v=FXppKkODi_8
https://www.youtube.com/watch?v=vyGhPDraRrw
songs
facts to 3 https://www.youtube.com/watch?v=uRoJ5E-Xx9s
facts to 7 https://www.youtube.com/watch?v=X3hEMk9W68A