Examples of some comments

"I found this science project really useful"
"Where can I buy the materials for this science project?"
"Why didn't you use helium instead of hydrogen gas in your experiment?"
"May I suggest that you repeat the experiment at least 5 times before collating your results, for greater accuracy"
"No, I don't think that this experiment is appropriate for 5th graders - it's too complicated"
"My son tried something like this last year and his teacher gave him good grades because....."
"My students have recently submitted their projects into the ScienceHound Science Fair and this particular project deserves special notice because..."
"This link leads to a really beautiful website with thousands of very well written articles on biology. I really enjoyed surfing the site."