I don't remember giving class presentations in third grade. I remember the painful ones in 7th and 8th grade. Some mean girls in my class may recall how many times I said "running water" in a speech on that topic since they were keeping track.
It's good to learn how to speak publicly. Might as well learn while you're young and the audience is more forgiving. Today I was very proud of how my third grader did on her oral report. Her topic was the Statue of Liberty and the poem, "The New Colossus." She had the poem basically memorized but opted to read from her note cards instead. She seemed confident and relaxed. We can work on improving eye contact for the next one.
Let no one despise you for your youth, but set the believers an example in speech, in conduct, in love, in faith, in purity. 1 Timothy 4:12 ESV