Click here to download the catalog as a PDF file. To view this site you need Adobe Flash Player and your browser must allow javaScripts. Go here to get the latest Flash Player. Enhance learning with activities that connect the concepts of vibrations, waves and sound. Sound & Waves Sound Pipe (below) The Sound Pipe, or singing tube, will captivate your students’ imaginations. Twirling the pipe at different speeds produces up to five different resonant tones. It’s a great addition to your resonance demonstration collection. The Sound Pipe can also be used to demonstrate fluid dynamics. Includes an easy-to-read instruction sheet which explains the principles demonstrated. P7-7200 $2.75 12 or more $1.90 each Space Phone If you liked Star Wars, you’ll love the Space Phone. How could something as simple as two megaphone/ear trumpets connected by a helical coil spring produce such an amazing array of sounds? Excellent as an introduction to sound and wave theory — your students will learn a lot from this gadget, if they can get it away from you long enough to play with it themselves! Explanation sheet included. P7-7150 $11 Your Satisfaction is 100% Guaranteed! See order form for details. Super Springy (below) This extra-long version of the familiar and always popular spring toy provides an excellent demonstration of wave theory. Measuring 75 mm in diameter, with a length of 150 mm, the Super Springy stretches to 10 meters. Mini Spring (not pictured) Super Springy’s little brother “Mini Spring” is 11⁄2" in diameter and comes in assorted colors. 33-0120 10 or more $1.60 $1.25 Our “Singing” Rods Make A Great Addition To Your Lessons on Sounds and Waves! 33-0130 $9.50 Just like the Singing Sword of legend, these magical rods will “sing” for you… if you know the secret. Simply hold a rod between your thumb and forefinger at one of the three marked nodes. Place a little of the included special rosin on your other hand. Then rub that hand along the rod from middle to end. As you stroke, friction creates a standing wave pattern which emits a tone that grows louder with each stroke. The resulting high-pitched ringing is sure to wake up everyone in class! The rod is marked at the quarter and halfway points. Holding it at the halfway point makes that spot a nodal point and creates the first harmonic. Moving your hand to a quarter point forces the second harmonic — and a higher pitch! (These and other experiments are discussed in the included explanation/activity sheet.) Dramatically demonstrates nodes, anti-nodes and standing waves A must for explorations of sound and waves, these rods are an easy way to demonstrate longitudinal waves as opposed to transverse waves. They’re ideal for teaching about nodes and anti-nodes in standing waves. And they’re a great follow-up activity to see if students really understand sound and waves. You get two rods (75 cm and 50 cm), so you can demonstrate the relationship of pitch to length. P7-7250 P7-7250-01 Singing Rods (Set of two) $19 Extra Rosin $3.25 Discovery Pack Sound & Waves Discovery Pack All the demos you need for a basic unit on waves and sound. Demonstrate types of waves, wave properties, sound production, and properties of sound. Super Springy Snaky Space Phone Singing Rods Boomwhackers 2 Sound Pipes P7-2030 $99 Doppler Ball Standing Wave Demo Instructions & Lesson Ideas To order visit arborsci.com 29