clix - Sound
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Introduction Adding Buddy Exploring Platform Exploring Units
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3.6 Teachers' Note

This section is the gist of all the activities done above in unit 4. After doing hands-on activities and direct experiences of this which are said about the propagation of sound in different media (gas/liquid/solid). Ask students to read this section carefully.  
[Contributed by administrator on 14. März 2018 23:00:52]