On Day 8, we investigated **transverse ****waves**.

- Students did some prep work at home by playing with a PhET interactive simulation exploring qualitatively various properties of a wave on a string, and recording their observations.
- In class, we introduced a
and students worked in groups to come up with a comprehensive list of properties of a sine wave needed to describe it to grandma. This led us to the concepts of**transverse sine wave****amplitude**,**wavelength**,**period**,**frequency**, and**speed**, as well as their respective appropriate units. We subsequently practiced finding the values of these properties for three animated waves I made using Grapher. - At the end of the class, as a taste of things to come, students briefly made waves with slinkies.