Each group needs:

• LEGO MINDSTORMS NXT Intelligent Brick
• LEGO MINDSTORMS Sound Sensor
• whistle
• How Do Our Ears Work? Pre-Activity Quiz, one per student
• Sound Intensity Worksheet, one per student
• The Marvelous Ear Post-Activity Quiz, one per student

To share with the entire class:

• computer and projector to show the The Marvelous Ear Presentation, a PowerPoint file
• vacuum cleaner (and other sound-making items that can be measured for sound levels)