(light music) <v ->In this year four lesson from the unit</v> "Introduction to Sound," pupils develop their substantive knowledge by learning that an object that vibrates to produce a sound is called a sound source. They also learn that the volume of a sound refers to how loud or quiet it is. Prior to this, pupils began to consider sounds from different sound sources, including the volume of sounds produced by sources that are near to us and far away. In this lesson, pupils develop their questioning skills as they formulate a range of inquiry questions to investigate whether there is a relationship between the volume of sounds and the distance from the sound source. <v ->What do you think?</v> Do you think you'd have to be close to a sound source to hear the sound? <v ->If you walk away,</v> it gets quieter and quieter. <v ->You can still hear a little bit,</v> but not as loud if you're really close to it. <v ->Izzy disagrees because she heard the siren</v> of an ambulance when it was far away. Does that change what you think? You heard an ambulance from far away as well? <v ->Yeah. </v> <v ->Yeah. </v> So using your whiteboard, have a go at applying a scientific question for that investigation. <v ->Guided by the teacher, pupils use question words</v> such as does, do, are, and how to help structure their questions. They also learn that scientific questions often include verbs like 'effect' and 'depend. ' <v ->I'm going to hand out some question writing cards, okay?</v> So you can maybe edit and improve so that what you have written on your boards is actually a scientific question. <v ->This video shows pupils as active participants,</v> working scientifically and purposefully to review and refine their ideas. They ensure that their final inquiry questions contain relevant key vocabulary, distance, volume, sound source, and sound. <v ->So we are finding out the volume of a sound</v> depends on the distance of the sound source. There are key words. Okay, I wonder if you've used any of our keywords in your question. Can you circle them if you've used them with the felt pin, please? Key words are 'volume,' 'distance,' 'sound source,' and 'sound. ' So I would like you now to create your final scientific question using all of those keywords so you can edit, make sure you've got those keywords in. <v ->Through this process,</v> pupils develop their disciplinary knowledge of how to use appropriate scientific language to discuss their ideas and ask relevant questions about the world around them. <v ->Does the volume change</v> as your distance moves away from the sound source? <v ->Does the volume of the sound get louder</v> or does the sound get quieter the greater the distance from the sound source? <v ->Will the volume of the sound</v> depend on the distance away from the sound source? <v ->Now that pupils have created</v> an appropriate inquiry question, they will plan an investigation to help them understand how one factor depends on or affects another. In this case, they will investigate whether the volume of a sound depends on the distance from the sound source. (light music).