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This lesson (on pages 15-24 of PDF) explores how sound is caused by vibrating objects. It explains that we hear by feeling vibrations passing through the air.

$1 - $5 per group Ages 4 - 18 10 to 30 minutes
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In this is activity about sound and vibration, learners create their own 'flutes' with drinking straws, then investigate how changing the length of the straw affects the sounds that are produced.

1 cent - $1 per student Ages 4 - 11 5 to 10 minutes
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Capture soap bubble patterns on paper! In this activity, learners can create beautiful pictures from popping soap bubbles.

$1 - $5 per group Ages 4 - 8 10 to 30 minutes
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This activity models the way Landsat satellites use a thermal infrared sensor to measure land surface temperatures.

Over $20 per group Ages 4 - adult 5 to 10 minutes