Google Suite: Tips for using the Gmail, Drive, Docs, etc.
Video tutorials created by the PSD IT Department
Tech Tip: archive of the Tech Tip of the week emails
Smithsonian Learning Lab: Images, audio and video from the Smithsonian Collection. Can share via google classroom, email etc.
Reading Like a Historian: Complete lesson plans from this Stanford University website.
PBS Learning Media: Images, videos, texts and more searchable by grade level, subject and standard.