- Science
- Properties of sound waves- Sound Energy
- Age 9-12
-
level: Grade 4
- English
คำแนะนำของผู้เขียน
Properties of sound waves: pitch, loudness, and tone.
คำแนะนำของผู้เขียน
Properties of sound waves: pitch, loudness, and tone.
level: Grade 4
Properties of sound waves: pitch, loudness, and tone.
Properties of sound waves: pitch, loudness, and tone.