The International Society for Technology in Education (ISTE) has put together a set of resources for remote learning through its Learning Keeps Going website. Not all the resources are digitally based, but those that are have been vetted and are ones that are free at the current time.
Several ideas and resources are available through this site’s many links (many not requiring a robust online portal), including this article from the NY Times with daily writing prompts and weekly “What’s Going On with This Color?” and “What’s Going on With This Graph?” interactive discussions aimed and engaging students in learning and critical thinking.
The ISTE site has links to areas for teachers and leaders (including tips for developing remote learning plans), parents, and webinars with tips on implementing remote learning. It’s definitely worth checking out.