Assign each group to use one type of material such as fabric, wood, plastic, paper, metallic, stone or polymer. 

Each group needs:

• roll of tape
• glue
• scissors
• shoebox or tissue box with the top removed (note: each group’s boxes should be roughly the same size, so have the students determine this during the Decibels and Acoustical Engineering lesson)
• one type of material from the list below:
• 8 felt pieces
• 1 bag cotton balls
• 8 fleece pieces (10 cm x 15 cm)
• 4 toothpick boxes
• 2 popsicle stick packs
• 1 packing peanuts box
• 1 bag of Styrofoam plate
• 1 bag of Styrofoam cups
• 8 note cards (10 cm x 15 cm)
• 1 newspaper
• 2 copy paper sheets (20 cm  x 27 cm; standard 8.5 x 11 in)
• 1 box of aluminum foil
• 1 package of plastic plates
• 1 package of plastic cups

To share with the entire class:

• portable speaker and two smart phones (for decibel testing and sound generation)
• Two apps from the App store:
• Tone Generator
• Decibel X: dB, dBA Noise Meter