https://www.towson.edu/fcsm/centers/stem/digital-learning-resources.html
The Towson University Center for STEM Excellence has developed a variety of free digital resources for teachers and students. Each lesson is contained in a Google Slides presentation, which you can easily assign to your students through a single link. Or project the lesson and work through the activities as a group. Instructions for Teachers (PDF) provides logistics on how to access and assign the lessons.