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Investigation: Bending, Sending, and Catching Sound

Longer, Shorter, Higher, Lower

Check Your Understanding: The Water Staircase

Loud and Soft on Purpose

Check Your Understanding: The Conductor

Sound Travels

Check Your Understanding: The Slack String

Sound Catchers

Check Your Understanding: The Listening Walk

Lessons 4–7: children bend pitch with water glasses, control volume on purpose, send sound down a string, and hunt quiet sounds with paper cones — the investigation phase of the unit.

The investigation phase: children change pitch and volume deliberately, discover that sound travels — but only under the right conditions — and learn to gather sound from the world around them.

Changing and Moving Sound

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