In case you are searching for fun ways to practice addition at home, here are a few online addition games that may not pop up right away in Google searches for "addition games". All three of these websites have several addition games that would be fun practice for your children at home.
Also, if you do not have your child's Mathseeds or Reading Eggs login information, let me know and I will get that to you so he/she can play at home. These are both wonderful resources but they are really expensive for parent memberships. However, your child can use the same login information that they use here at school in order to access it at home.