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This is a virtual representation of a sound mixer containing pre-looped sounds of animal, insect, and environmental noises.

free Ages 6 - 11 5 to 10 minutes
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This is a virtual representation of a sound mixer containing pre-looped sounds of animal, insect, and environmental noises.

free Ages 6 - 11 5 to 10 minutes
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Make a copy of the first stethoscope with only a cardboard tube! René Laennec invented the first stethoscope in 1819 using an actual paper tube!

free Ages 4 - 14 5 to 10 minutes