Excel graphs are easy enough for third graders. So try it. Collect your data, enter it into an excel worksheet and push F11. If you have more time, show students how to format the graph. This is a favorite with my third graders.
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More about spreadsheets:
5 bundled Excel lesson plans (for a fee)
Jacqui Murray has been teaching K-8 technology for 15 years. She is the editor/author of over a hundred tech ed resources including a K-8 technology curriculum, K-8 keyboard curriculum, K-8 Digital Citizenship curriculum. She is an adjunct professor in tech ed, CSG Master Teacher, webmaster for four blogs, anAmazon Vine Voice book reviewer, Editorial Review Board member for Journal for Computing Teachers, CAEP reviewer, CSTA presentation reviewer, freelance journalist on tech ed topics, and a weekly contributor to TeachHUB. You can find her resources at Structured Learning.