What method is best for fostering discussion in small groups during an investigative lesson?

The most effective method for fostering discussion in small groups during an investigative lesson is using open-ended questions to guide discussions. This approach encourages students to think critically and creatively, allowing them to express their thoughts and explore various perspectives on the topic being investigated. Open-ended questions do not have a single correct answer, which stimulates deeper thinking and promotes engagement among students. This method helps to create a dynamic learning environment where students feel comfortable sharing their ideas, debating concepts, and collaborating on solutions.

The other choices, while having some merit in different contexts, do not foster discussion as effectively. Restricting options for children to evaluate may limit their ability to engage in meaningful dialogue and exploring varying viewpoints. Allowing each child to express individual thoughts, while important, may not lead to a cohesive discussion or collaborative exploration of ideas. Removing disruptive centers may create a calmer environment, but it does not directly contribute to promoting productive discussion among small groups focused on investigation.