Welcome students. Introduce today’s topic and hook their curiosity. • Ask: “What recent changes in thinking or emotion have you noticed in yourself or peers?” • Capture answers on the board and connect to slide title.

Define the two main regions. Use a simple brain diagram if available. • Point out locations of Prefrontal Cortex vs Limbic System. • Emphasize that both are still developing during adolescence.

Explain that the prefrontal cortex matures last, which is why planning and self-control can be challenging. • Show a brain image highlighting the frontal lobe.

Discuss why heightened emotions and peer influence are strong in adolescence. • Show an image of the limbic structures (amygdala, nucleus accumbens).

Transition into the group activity. Explain that they’ll analyze scenarios where risk and reward compete. • Reference the printed [Risk & Reward Scenario Activity Sheet](#activity-sheet-risk-reward).

Introduce strategies before handing out the worksheet. • Emphasize practical tips they can try immediately.

Wrap up the slide presentation and hand out the [Brain Changes Student Worksheet](#worksheet-brain-changes-9th). • Ask students to list their own strategies. • Invite volunteers to share.