K-4 ┊ 602 words ┊ ◄))
K-4, 602 words, 5 minutes audio time.
Sound is created through vibrations that vary in pitch and volume. This creates sound-waves that you can hear. Includes experiments.
READ
K-4 ┊ 602 words ┊ ◄))
K-4, 602 words, 5 minutes audio time.
Sound is created through vibrations that vary in pitch and volume. This creates sound-waves that you can hear. Includes experiments.
READ