This is a light curiosity beat only. Do not hand out rulers, bands or the drum yet.

Hum yourself with your hand on your throat so the class can copy. Ask two or three children what they feel. Accept any honest answer: a buzz, a tickle, a shake.

STEM eyes: link to everyday sounds later, not in the hook. Keep this moment short and surprising.

Have the drum with cling film and a pinch of rice ready out of sight for the exploration step, but do not show it yet.

Use think-pair-share. Predictions are never wrong; they are the start of the science.

Collect three or four ideas on the board in the children's words (for example: air comes out, it shakes, magic, the thing hits something). Leave them up to revisit at the end.

Misconception to note, not correct yet: some children think sound is only air leaving the mouth, or only loud bangs. The hands-on will challenge both.

Do not name vibration yet. Let them meet the feeling first.

Before the lesson

• Stretch cling film tightly over an empty biscuit tin or small drum and secure with an elastic band or tape.
• Put a small pinch of dry rice on the skin (not a heap).
• Set out one ruler and a few elastic bands for each pair or small group.
• Clear desk edges so rulers can overhang safely.

Classroom choreography (12 minutes)

Run the shared drum first, then the desk tries. Do not treat all four as equal simultaneous stations. On the IWB, keep only the beat you are on in view (cover or scroll so children see watch-together first, then the desk list).

1. Whole-class drum model (about 3 minutes). Keep pairs at their seats. Think aloud with the drum and rice only:
   • I wonder what will happen to the rice if I tap the side of the tin.
   • I predict the rice might jump a little if the skin moves.
   • I test (tap once, class-friendly volume).
   • I observed the rice jumped and danced, then settled when the skin went still.
   • I think the skin was wobbling, and that wobble made the sound we heard. When the wobble stopped, the sound stopped.
   Leave the drum at one class station (or two if you have a second tin).
2. Pair desk tries (about 7 minutes): ruler, band, throat. Send pairs to try only these three at their desks. Circulate and keep asking: What is moving? When does the sound stop?
3. Shared drum check (about 2 minutes). Either invite each pair for a quick look at the drum station while you or a child taps once more, or bring the drum around the room so every child sees the rice jump up close. Watching counts as doing this beat.

The three desk tries (how-to)

• Ruler: hold one end firmly on the desk so about half hangs over the edge; flick the free end gently downward. Feel the free end. One clear flick-and-feel is enough; do not spend time comparing longer and shorter overhangs.
• Elastic band (pair roles): one child holds the band stretched between two thumbs only. The partner plucks once, then immediately feels the band with a fingertip while it still sounds. Swap roles so both hold and both feel. Do not wrap bands around books or frames. Do not ask one child to hold, pluck and feel alone.
• Throat: hum again with fingertips lightly on the voice box area.

Safety

Twang rulers and bands gently and away from faces. No aiming bands. Keep drum taps class-friendly. Rice is not for eating. Wipe any spills.

Differentiation: less confident children stay with you at the drum station and only use one word for what they feel (jump, shake, buzz). Confident pairs can try a soft tap and a slightly stronger tap on the drum and say which wobble looked bigger.

Extension only (if time later): longer and shorter ruler overhangs and any pitch difference can wait for a fast-finisher or a later challenge. Keep this lesson on the core wobble link.

Whole-class oral share only. No drawing or journal work in this step; the single draw moment is in the Investigation Journal step later.

Revoice children's words toward movement language: shake, buzz, jump, wiggle, still.

Look-fors:

• Children link the feeling or the moving rice to the moment they heard the sound.
• Someone notices the sound stops when the thing goes still.
• Someone still thinks only the hit makes the sound, not the ongoing wobble. Gently point back to the rice still dancing after the tap.

Keep this short. Do not introduce the board interactive yet.

Drive the interactive on the IWB in display mode. Lead with the picture first: ask children to watch the skin, then name the words after they have looked. The drum scene is already set with a strong wobble. Nothing is dragged or tapped by the children; you narrate what they see.

Point out: the skin moves a lot (a big wobble), rings spread toward the ear, and that matches the rice jumping on our real drum. Teacher aside on the rings: we cannot see the air wobble. The rings are a picture of the idea. The sound starts at the skin; the air carries the wobble to our ears. Keep child-facing wording simple.

If you use the Hear it button, keep the volume class-friendly; turn enableTone off if the room needs quiet — the picture still teaches.

Misconception to head off: children may say the eye or the ear makes the sound. The sound starts at the wobbling thing; the ear receives it.

Ask: What is the drum skin doing when we hear the sound?

Spoken naming beats (after looking): first say, "The shaking we felt has a name: a wobble. Scientists also say vibration." Pause. Then: "Sound is what we hear when that wobble reaches our ears."