Activity 01
Pairs: Rubber Band Pitch Play
Provide rubber bands of varying thicknesses stretched over boxes. Pairs pluck bands to produce sounds, noting how thicker bands make lower pitches and thinner ones higher. They sequence three pitches to form a simple rising melody and record findings in notebooks.
Explain the relationship between an object's vibration and the pitch of the sound it produces.
Facilitation TipDuring Rubber Band Pitch Play, remind pairs to keep the base board flat and the rubber bands parallel to avoid uneven tension.
What to look forPresent students with three objects (e.g., a thick rubber band, a thin rubber band, a ruler). Ask them to predict which will produce the highest pitch when plucked or vibrated and explain their reasoning based on vibration speed.