Sound Resources and References

https://www.ducksters.com/science/sound101.php​ 
​https://empoweredparents.co/benefits-of-musical-instruments-for-toddlers/ 
https://kids.britannica.com/kids/article/sound/353791 
https://www.generationgenius.com/videolessons/introduction-to-sound-video-for-kids/ 
http://www.sciencekidsathome.com/science_topics/what_is_sound.html 
https://sciencekids.co.nz/sciencefacts/sound.html