The document discusses using primary sources and shared inquiry to encourage critical thinking in students. It recommends teaching students real-world skills and unique questioning strategies. Shared inquiry discussions are suggested, where students carefully read a text beforehand and support their interpretations with evidence, while listening to and responding to other students. The leader's role is to ask guiding questions rather than giving their own analysis. Five guidelines are provided for effective shared inquiry, including preparation, discussion of ideas, use of evidence, active listening, and the leader facilitating rather than interpreting.