Human Wave: Modeling P and S Waves
IRIS (Incorporated Research Institutions for Seismology) and ShakeAlert
Lined up shoulder-to-shoulder, learners are the medium that P and S waves travel through in this simple, but effective demonstration. Once "performed", the principles of P and S waves will not be easily forgotten. This demonstration explores two of the four main ways energy propagates from the hypocenter of an earthquake as P and S seismic waves. The physical nature of the Human Wave demonstration makes it a highly engaging kinesthetic learning activity that helps students grasp, internalize and retain abstract information.

Frequency of Large Earthquakes
Jennifer Pickering
Using the IRIS Earthquake Browser tool, students gather data to support a claim about how many large (Mw 8+) earthquakes will happen globally each year. This activity provides scaffolded experience downloading data and manipulating data within a spreadsheet.

Pasta Quake: Exploring Earthquake Magnitude
Paul Doherty (Exploratorium Teacher Institute) and Roger Groom (Mt Tabor Middle School) with improvements by ShakeAlert
This short activity provides an intuitive introduction to earthquake magnitude using an everyday item--spaghetti. Learners are introduced to the earthquake magnitude scale by breaking different amounts of uncooked noodles. Visual scale of the pasta emphasizes the relative differences between magnitudes with each whole step in magnitude. For older students, the demonstration helps students understand why seismologists use the nonlinear logarithmic scale to best graph the huge range of quantities.

Measure a Changing Volcano
EarthScope Consortium
This hands-on demonstration illustrates how GPS can be used to measure the inflation and deflation of a volcano. Volcanoes may inflate when magma rises closer to the surface and deflate when the pressure dissipates or after an eruption.

Making Community Connections to Co-learn about Earthquakes
Jennifer Pickering
Many people live in regions prone to earthquakes, tsunamis and volcanic eruptions, but the hazards and risks inherent in our communities may be very different. Making connections with learners from another location is a great way to share knowledge and practice science communication skills. Video conferencing applications like Zoom and Skype make it possible to connect with learners anywhere in the world. This activity provides a simple protocol, and a form for submitting a request to connect with a classroom teacher in Anchorage, Alaska.

Shrinky Dink Chemistry
Betsy Julien – Eisenhower Elementary School, Hopkins, MN, based on an original activity from Lori Stewart
This activity is a hands-on activity where students learn about polymers and the science of plastics, while making shrinky dinks.

Investigating Flight with Paper Airplanes
Ellen Gevers Lincoln Elementary White Bear Lake MN
Students will determine a testable question and create an experiment related to flight of paper airplanes. They will gather and record data and present their findings to classmates.

Economics of installing Solar PV panels: is it worth it to the individual?
Martin Walter, University of Colorado at Boulder
We show that it is economical for an individual to install solar photovoltaic panels in Denver, Colorado; and this is a sustainable strategy for society at large.