Final answer:
The length of Supplemental Instruction sessions varies, with some college courses offering sessions that last 3 hours each.
Step-by-step explanation:
The length of time for each Supplemental Instruction session can vary depending on the educational institution and the specific course requirements. However, it is not uncommon for such sessions to be quite extensive to allow for detailed exploration of course material. For example, in a college setting as described in the provided reference regarding an antibiotic resistance mini project, one segment of the project was performed in eight laboratory sessions that lasted 3 hours each. This suggests that for this specific college course, each Supplemental Instruction session was designed to be thorough, providing students ample time to grasp complex concepts and engage with the content in a meaningful way.