This optional lesson introduces the class to the idea of a minimum spanning tree. The activity focuses on determining an algorithm that will find the most efficient path in a network to transfer data. 

Students experiment with a virtual solar cooker to discover the relationship between reflection, transmission, and absorption.  In this solar cooking lesson students apply what they learn to construct their own solar cooker. 

Learners experiment in order to determine proper ways to disinfect hands to prevent the spread of infection.

Students discover how gears work and how they can be used to adjust a vehicle's power. Specifically, they learn how to build the transmission part of a vehicle by designing gear trains with different gear ratios.