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Kingdom of Sound
The Kingdom of sound was a magical land, where everything made beautiful sounds. The princess was spoiled by sounds of birds chirping, bells ringing, and beautiful music all day long. One night, an evil wizard snuck into the kingdom and stole all of the sounds. He collected these sounds in little eggs, and began to run away into the night. On his way out of the kingdom, he stumbled and dropped some of his eggs.
The next morning as the princess awoke, she went downstairs to find her parents in the kitchen, silent. What ever will she do! She went outside and there was more silence. No birds, or bells, or singing. It was awful! As she walked outside, searching for her beloved sounds, she found some strange eggs. With the eggs there was a poem that read:
"I stole your sounds and they are mine I’ll have them til the end of time. The only way to get them out is to explain all sounds without a doubt."
The princess needs help identifying what is making the sounds inside of each egg.
Explain
Sound
Sound is created by vibrations. It moves through a medium, like air molecules in a room, wood molecules of a door, or water molecules in a river.
Pitch
Pitch is changed by the frequency of vibration. Fast vibrations make higher pitch sounds, and slow vibrations make lower pitch sounds.
Volume
Volume is affected by the amplitude of the vibrations
(how hard or soft they are)
Elaborate
Instrument
I created a instrument like a xylophone using various sizes of glass bottles. Tapping the bottles create sounds of different pitches and volumes.
Poem
Sound waves are cool
harsh waves are loud
they make lots of sound
soft waves are quiet
they are almost silent
High frequency waves make
high pitched sounds
low frequency waves make
low pitched sounds
Sound waves are cool
Evaluate
I would use explanations from students videos to gauge understanding. I know a student understands key concepts if they can explain pitch and volume. I would specifically look for words like "frequency" when describing pitch. I would look for a clear description of the difference in wavelengths between high, low, loud, and quiet sounds.