This post will probably ruffle some feathers, but I'm dealing with this situation and would like advice. Our last project of the year has students researching one of three topics, and presenting their research to the rest of the class in lieu of me teaching them the lesson on that topic (I figure they're tired of hearing me talk anyway). Anyway, the topics are dark matter, dark energy, and the big bang. Astronomy topics they've asked me about all year, and I figured I'd help them figure out the answers on their own. Anyway, dark matter and dark energy are fine, but the big bang theory has a lot of poor sources out there with clear religious bias on the internet. I've been trying to address evaluating sources and identifying bias, but the fact is that most of our students are Christian and so I have to do it very carefully. My stance is, this is a science class, so your first responsibility is to present the scientific evidence for this topic. THEN you can also address the evidence for the other side of the topic, and evaluate each based on the evidence, or discuss each side. I don't know how much of what I'm saying is getting through to them, and am still seeing some outlines for essays that say "it's just a theory", "has no evidence", etc. Which they would know is false if they actually found sources that provided both sides of the argument (there is plenty of evidence, and I'm sad that some of my students haven't yet learned what a 'scientific theory' means). How would you address this as a science teacher afraid of trampling on the beliefs of students but also with the desire to teach students to evaluate their own research and evidence?