Lesson: 17 - Sounds for Sprites and Backdrops

Purpose : Students learn how to use sound for Backdrops and Sprites.

Materials Required

Scratch 3.0

Curriculum Content Sound (6.6).

Prior knowledge

Students should be comfortable with Scratch and basic controls in Scratch.

Exercises

Exercise:1


  1. Write a code in which you insert 4 musical instruments. When you click on each instrument, produce the sound related to it from the sounds tab.

    2. Exercise video


    Click here to view a model video for your reference.


    Exercise:2


  2. Teacher should teach how to upload new sound from the local drive. Create a Scratch project and try changing the pitch and volume using pitch block and change volume block tools.

    3. Exercise video


    Click here to view a model video for your reference.


    Click here to view the video to learn how to use the sound blocks in scratch.


Solutions


  • Click here to download the sb3 file for exercise 1.

  • Click here to download the sb3 file for exercise 2.


    • Teacher's Instruction
    1. Explain the different ways to produce sound in Scratch. Note that play is synchronous (i.e. the block doesn't complete till the sound is fully played) whereas start is asynchronous.
    2. The Students may use their own recorded sounds for Sprite and Backdrop.
    3. Students should be taught how to use Sound tools in the system to record, playback etc.
    4. Teachers may use the opportunity to explain the frequency or pitch of a sound. How lower pitch sounds, higher pitch sounds. How this is different from the amplitude or volume.