Each group needs:

• 1 Arduino UNO with USB cable (Example kit)
• 1 computer or laptop with access to the Arduino Integrated Development Environment (IDE)
• 2 infrared proximity sensors (e.g., https://www.amazon.com/Infrared-Avoidance-Transmitting-Receiving-Photoelectric/dp/B07PFCC76N)
• 1 RGB LED (available in the kit above)
• 6 female-to-male Dupont wires (available in the kit above)
• 1 ruler or measuring tape
• (optional) Arduino holder (i.e., device that protects Arduino boards from damage); not necessary but makes setup easier for students
• (optional) ramp; not necessary but makes setup easier for students
• 1 plastic cup
• 1 projectile (e.g., small ball)
• Horizontal Projectile Motion Intro Worksheet (1 per student)
• Horizontal Projectile Motion With Arduino Handout (1 per group)
• Horizontal Projectile Launcher Competition (1 per group)

For the entire class to share:

• various materials for projectile launcher construction:
• cardboard, plastic containers, PVC pipes, popsicle sticks, etc.
• springs, rubber bands or other elastic material, air pumps, etc.