June 17, 2018 (Father's Day!): From the Sound of ItSounds of summer are all around us. Let's use them to explore.
- Activity 1: Seeing Sounds
- Activity 2: Have to Hanger-Bang It Out
- Activity 3: Traveling to the Sound of a Different Drum
Activity 1: Seeing Sounds
Experiment with sounds
- Place a piece of plastic wrap over the top of an empty jar and pull it tight.
- Put a rubber band over the neck of the jar to keep it extra taut.
- Place a few grains of rice (or popcorn, sugar, etc.) on the plastic wrap.
- Bellow loudly with your face close to the jar. Think: Drill Sergeant!
- Watch what happens as you shout. "Come on! Move it!"
- Sing or shout with a deep voice, a high voice, loudly, softly, etc.
What you are seeing is the result of the sound waves traveling through
the air and hitting the plastic wrap.
What are sound waves?
Find an explanation at https://www.youtube.com/watch?v=AGjxfx8sy6s .
Activity 2: Have to Hanger-Bang It Out
Activity 3: Traveling to the Sound of a Different Drum
- Drums may have different shapes and sizes. Tap a pencil on the different-sized boxes. What do you notice? Do you get a higher or lower sound on bigger boxes?
- Tap a pencil on the different materials (for example, a box, a glass, a wooden block). What do you notice? How does the sound change?
- Decorate your drum.
Make a tune with a band. Play with speed of taps and different drums.
If your child is ready, try to record your tune by writing out the
music. For example, here is part of a tune the Robert, Maggie, and
Pierce have repeated. The code is capitol letters are slow beats,
lower case letters are quick beats and 0 are pause for a slow beat.
Robert is tapping a pencil on a wooden block, Maggie is clapping,
and Pierce is tapping a pencil on an oatmeal can drum. Our tune...
R rr R rr R rr R rr R rr R rr R rr R rr ...
M mm 0 mm M mm 0 mm M, mm 0 mm ...
pp pp pp pp pp pp pp pp pp pp pp pp pp ...
- Extend: Create other noise making instruments, for example rice in a closed container.
Where's the math? Recognizing, extending, explaining and recording patterns is part of the development of Algebraic Thinking. For children, mathematical patterns can be chunks that repeat (ABABAB...) or grow (ABAABAAAB...). For more examples, see "Too Many Thanks", part of our The Mathsters series. Recognizing patterns is also an important component of a child's intellectual development. Patterns extend and therefore can lead to predictions and generalizations. Children recognize patterns of all sorts in their surroundings and gradually begin to use this as a strategy for problem solving and as a tool for developing understandings (often initially over-generalizing or under-generalizing). It's beneficial to draw attention to patterns.