Turn off the AdBlock plugin to watch the video
and for the proper work of the site
unavailable
0+
All Lessons. 4th Grade. Science
Add to favorites
Added
Full HD
25 minutes
The online educational project of the All-Ukrainian School is focused on distance learning of necessary knowledge for pupils of general educational institutions during the coronavirus pandemic. Teacher Olga Stetsun has prepared a lesson for fourth-grade pupils on sound properties. She will demonstrate wave flows of sounds.