In this unit, pupils are introduced to sound energy. The unit begins with a discussion on how sounds are produced and the different types of sounds we hear in everyday life. Musical instruments are used as an example of how sound is produced when something vibrates. The unit goes on to look at the ways in which sound is used in everyday life. Examples provided include communication with people and devices such as telephones, television and emergency vehicles. The unit concludes with examples and an explanation that sound can travel through solid, liquid and gaseous matter.
Episode 1: How Sounds are Produced
In this unit, Pupils are introduced to 8 years old Humaira. She likes to play different types of musical instrument. She is trying to convince her mother to send her to a music class but she needs to know about sound first.
This episode focuses on introducing to the pupils how sounds are made. It begins with a discussion of how sound are produced based on the pupils prior knowledge. Pupils will be given a chance to discover different types of musical instrument and different ways sound can be produced.
The episode goes on to look on vibration and the relationship of vibration and sound.
Episode 2: Sound in Everyday Life
In this episode, as Humaira reached home after learning about sound from her teacher, she came home jumping, telling her mom that she should now be sent to music school as she has learnt about how sounds are produced. Her mother was furious, she said, “There’s more to sound than just how it’s made. You are not ready yet.” Humaira was frustrated hearing her mother’s nagging. She closed her ears and cried. She wished she couldn’t hear about it. She wished she couldn’t hear at all.
In this episode, pupils will learn about the importance of sound in our everyday life, how sound is important in communication, including communication between animals, how sound helps us to do basic things in our routine like waking up to the sound of the alarm etc.
Episode 3: Loudness of Sound
In this unit, Humaira is inviting her friends to come over to her house for a playdates. She provides a lot of musical instrument for her friends to play. Some of the instruments Humaira played with her friends were guitar, xylophone, drum, hadrah, tambourine, piano, triangle, flute and maracas. When they are practicing the musical instruments, Humaira’s neighbours are complaining about the noise caused by her band. This unit also provides a justification for scientific investigations of the effects of the loudness and the distance on sound.
In this episode, the pupils are taken through the process of predicting, identifying variables, carrying out, recording and interpreting the results and reporting their investigation. They complete the episode by doing a journal on advising how they can reduce noise pollution.
Episode 4: How Sound Travels
Humaira is getting more interested to know more about sound. She is curious about how sound travels to her ears and how sound travels around her especially when she plays different kinds of musical instruments. The complain of her brother who is always disturbed by the sounds of her musical instrument makes her wonders how. Moreover, she questions herself how she can hear and talk to her grandmother on the telephone line.
In this episode, the pupils will carry out various investigations to find out how sound travels through solid, liquid and air. Enabling questions are posed and shown on the slides to facilitate the pupils while they are on-tasks. The pupils’ investigations and reports will help to proof that sound can travel through solid, liquid and air.