Salt Vibrations:  Sound waves you can see!

Salt Vibrations: Sounds You Can SEE!

Salt Vibrations: Sound waves you can see. Another great way to demonstrate sound waves to children.

amazing quotes - Google Search

“Every morning in Africa,a gazelle wakes up.It knows it must run faster than the fastest lion or it will be killed.Every morning a lion wakes up.It knows it must outrun the slowest gazelle or it will.


More ideas
Pinterest
Search