JoinAll High School resources
Book Chapter
Sound travels in waves, but those waves aren't exactly like waves on a string. One nice things is that sound waves have all the same relationships between frequency, wavelength, and velocity that waves on a string have. In this chapter, we will fin...
Book Chapter
Harmonic convergence refers to a day back in 1987 where there was a particular planetary alignment. New Agers went crazy over the event, and if you want to get a taste of what it was like, enter harmonic convergence into your favorite Internet searc...
Book Chapter
Yep, you guessed it. This chapter is all about music. Yes, we've already talked about music and musical instruments, but we're going to get into this subject in more detail. For example, you might already know that larger musical intruments tend t...
Book Chapter
We've covered most of the basics of how sound is produced and transmitted, but we've left something out, and that's all the electronic devices we use to amplify sound, reproduce it, or get it from one place to another. How exactly does a CD player w...
NSTA Press Book
Sound: Stop Faking It! Finally Understanding Science So You Can Teach It
Muddled about what makes music? Stuck on the study of harmonics? Dumbfounded by how sound gets around? Now you no longer have to struggle to teach concepts you really don’t grasp yourself. Sound takes an intentionally light touch to help out all...
By William C. Robertson, Ph.D.
NSTA Press Book
Light: Stop Faking It! Finally Understanding Science So You Can Teach It
Why is left right and right left in the mirror? Baffled by the basics of reflection and refraction? Wondering just how the eye works? If you have trouble teaching concepts about light that you don’t fully grasp yourself, get help from a book that�...
By William C. Robertson, Ph.D.
NSTA Press Book
Decay and Renewal (Student Edition)
Most of us throw or flush things away every day without thinking about the fact that there is no “away.” Whether discarded substances break down or not, they affect our environment. By investigating the processes in wastewater treatment, composti...
By Nancy M. Trautmann, The Environmental Inquiry Team