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    4.   What is the meaning of “change pan left/right effect by…” block?

                     5    “change volume by…” block is used for                                     ___________.

                                  Activity 3.2

                       1.       Add a sprite in your project from “music” tab. And play sounds and also it

                              changes their sound pitch effects after every 1 seconds, when we click on
                              Flag.
                       2.       Write the script for showing a birthday party scene with different sounds
                              and dance movements. (Hint: change the costume and sounds of sprites.)

                        Aryan: Wow! I can create stories now with sounds also, But please tell me could sprites speak
                        also in my story.

                        Gowri: Yes! Dear Aryan, It’s possible with an Extension in Scratch named “Text to Speech”,
                        which is not already added, you have to add it by your own in Scratch.

                        Aryan: Ok, please help me to add this extension in my project.

                     3.2  ADDING AN EXTENSION— “TEXT TO SPEECH”-
                        Gowri: Sure Aryan! I will tell you, no problem. It’s very simple dear. See the steps:-

                     Step 1:  Click on the “Add Extension”                 icon on the left bottom corner of the
                                Scratch window.

                                Then a window named “Choose an Extension” appears as shown in Fig.(3.2)

                     Step 2:  Choose “Text to Speech” extension, marked in Fig.(3.2).

                                                                   Fig. 3.2

                                                                                          Scratch                       33

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