This spreadsheet has pages of activities for Pre-K, K-2, 3-5, 6-8, and 9-12 graders in 5 categories: reading, writing, discussing, helping, and creating. These mostly no-tech, offline activities are meant to be mostly independent (with some parental guidance for the younger aged kids.) The resource page provides many online resources including virtual field trips, exercise activities for kids at home, language learning online, and much more.