• Quick retrieval from earlier learning (Find the part that vibrates to make the sound). Students answer on mini whiteboards.
• Show answers together and note who needs support in the main task.

1. What vibrates to make the sound of a voice? (the metal triangle / the strings / your vocal cords in your throat / the stretched skin on top) → your vocal cords in your throatPrompt: Which part moves back and forth when the sound is made?
2. You pluck a guitar string and then touch it to stop it moving. What happens to the sound? (It gets louder. / It gets higher. / It stops. / Nothing changes.) → It stops.Prompt: What makes the sound in the first place?
3. True or false? A drum makes sound even when nothing hits it. (True / False) → FalsePrompt: What is happening to the object when a sound is made?

• Ask the class to make a wave with a rope or slinky and describe what moves and what doesn't.
• Share the objective: Sound can make things vibrate. Read the success criteria together.

• Work through the example out loud, saying why you do each step, not just what you do.
• Example: A tuning fork is struck and then dipped into a bowl of water. What do you see?
• Step 1: The vibrating fork shakes the water, showing that sound is vibration.
• Step 2: So the answer is: The water splashes and ripples.
• Answer: The water splashes and ripples.
• Pause after each step and ask a student to say what comes next.

• Do these together. Students try each step on whiteboards before you reveal it.
• Use the hints as prompts rather than giving the answer.

1. When a very loud lorry (truck) goes past, the windows rattle. Why? (The lorry touches the windows. / The windows are making the noise first. / The loud sound makes the glass vibrate. / The windows are scared.) → The loud sound makes the glass vibrate.Prompt: Sound carries vibrations from the lorry to the house.
2. True or false? We hear because sound makes parts inside our ears vibrate. (True / False) → TruePrompt: How does sound get from one place to another?

• Students work on the student sheet. Circulate and check the first two answers of every student early.
• Students who finish: write a question of their own for a partner, with the answer.

The 6 questions are on the student sheet below, with answers in the key.

• Two questions on their own. Sort answers into got it / nearly / not yet to plan the next lesson.

1. Sound and vibration: which statement is true? (Rice on a drum jumps because of the light in the room. / A string telephone works because vibrations travel along the string. / Sound can only travel through air. / A string telephone works best with the string loose and floppy.) → A string telephone works because vibrations travel along the string.Prompt: Sound is a shaking that passes from thing to thing.
2. True or false? Only things you touch can be made to vibrate. (True / False) → FalsePrompt: How does sound get from one place to another?

Free online practice with hints and printable worksheets for this skill: eurekami.com/science/grade-1.