Before the Activity:

• Prepare Materials: Gather all low-fidelity prototyping materials (cardboard, tape, rubber bands, etc.) and ensure there are enough for each group.
• Set Up Randomization: Write the names of the simple machines on slips of paper for students to draw from a hat.
• Introduce the Challenge: Explain the goal of transporting the ping-pong ball from point A to point B using two simple machines.

During the Activity:

• Demonstrate and practice proper tool use (cutting away from the body, handling hot glue safely, and keeping workspaces organized).
• Facilitate Brainstorming: Encourage students to sketch multiple ideas and consider how different machines can interact.
• Provide Guidance: Walk around to check on teams, ask probing questions, and ensure they’re using the two required machines effectively.
• Monitor Construction: Ensure safe tool use (hot glue, box cutters) and help troubleshoot if a team gets stuck.

After the Activity:

• Testing & Reflection: Have students rotate through and test each group's obstacle course, observing how well it functions.
• Group Discussion: Ask teams to share their design choices, what worked, and what challenges they faced.
• Document & Celebrate: Take photos/videos of the obstacle courses in action and encourage students to reflect on how they improved their design thinking