Each group needs:

• Audacity software, for recording and editing sound; free download at http://audacity.sourceforge.net/
• computer with the Audacity software installed
• computer microphone, available at electronics stores such as RadioShack^® or Best Buy^®
• Sound Pre-Quiz, one per student
• Sound Worksheet, one per student
• Sound Post-Quiz, one per student

To share with the entire class:

• Robot Sensors and Sound Presentation, Microsoft^® PowerPoint^® file
• computer and projector to show the presentation
• (optional) 4 LEGO® robot sensors: light, touch, sound and ultrasonic, as provided in the LEGO MINDSTORMS® Education NXT Base Set (for this activity, the sensors are only needed to show students; photos of the sensors are also pictured in the slide presentation)