Here are links to other websites that contain educational STEM resources.
https://www.sciencebuddies.org/
https://www.steamcafe.net/stem-at-home/
https://www.edx.org/learn/stem
https://blog.futurefocusedlearning.net/36-stem-project-based-learning-activities
https://globaldigitalcitizen.org/36-stem-project-based-learning-activities/
https://www.nasa.gov/women
https://www.nea.org/professional-excellence/student-engagement/tools-tips?
https://smile.oregonstate.edu/view-lessons
https://www.pltw.org/blog/20-super-cool-summer-stem-activities
https://www.teachengineering.org/
https://onlinedegrees.und.edu/masters-cyber-security/online-stem-resources-activities-teens/