Which techniques can be employed to engage students during a lesson?

Engaging students during a lesson is crucial for effective learning, and employing techniques like interactive demonstrations, group discussions, and questioning strategies plays a significant role in achieving this.

Interactive demonstrations allow students to see concepts in action and can stimulate interest and curiosity. When students actively participate in demonstrations, they are more likely to retain information and understand practical applications. Group discussions promote collaborative learning, allowing students to share ideas, ask questions, and learn from each other's perspectives. This interaction fosters a sense of community in the classroom and encourages deeper engagement with the material. Questioning strategies further enhance engagement by prompting critical thinking and encouraging students to articulate their understanding, which can lead to more dynamic discussions.

The other options tend to be passive forms of instruction that do not encourage active participation or interaction. Lectures with minimal interaction can lead to disengagement, as students may become bored or lose focus without opportunities to contribute or ask questions. Reading textbook chapters in silence lacks interactive elements and can make learning feel isolated and unengaging. Simply showing instructional videos may also fail to engage students unless they are accompanied by discussions or activities that require student involvement.

Therefore, the techniques highlighted in the correct answer are more effective for stimulating student engagement and facilitating a richer learning experience.