Lessons and activities are avaliable here.
Year 4 Science Overview 1st half Summer TermDOCX File
Science Lesson 1- How sounds are madePPTX File
Science Lesson 2 - How vibrations travelPPTX File
Science Lesson 3 - Sound and PitchPPTX File
Science Lesson 4 - Sounds get fainter with distancePPTX File
Science Lesson 5 - Sounds moves through solidsPPTX File
Musical Coat HangerPDF File
string telephonePDF File