Here are some useful links about The Tempest.
A summary of the characters and the plot in "The Tempest", suitable for Y5, Y6 & Y7
Some excellent resources on the BBC's Teach site, including episodes as PDF files.
Another infographic summary from CourseHero
Some good stuff on Oak Academy, too...
Act one, scene two from the RSC production, which was made in association with Intel (to visualise the character of Ariel ).
More from the RSC Teacher Resources section, specifically exploring the themes around MAGIC.
You can also Register for Live Performances.