Excel makes graphs simple and easy for beginners. Even my parent helpers are amazed at how much students can do with a simple F11 shortkey and a right click. This lesson plan works just as well with Google Sheets though you may have to adapt a few of the instructions.
If the lesson plans are blurry, click on them for a full size alternative.
Jacqui Murray has been teaching K-18 technology for 30 years. She is the editor/author of over a hundred tech ed resources including a K-12 technology curriculum, K-8 keyboard curriculum, K-8 Digital Citizenship curriculum. She is an adjunct professor in tech ed, Master Teacher, webmaster for four blogs, an Amazon Vine Voice, CSTA presentation reviewer, freelance journalist on tech ed topics, and author of the tech thrillers, To Hunt a Sub and Twenty-four Days. You can find her resources at Structured Learning.