Experiments
Measuring the Speed of Light with Chocolate: https://www.youtube.com/watch?v=kpB1wezpJeE
Why is the Sky Blue?: https://www.exploratorium.edu/snacks/blue-sky
Light Travels in Straight Lines: https://www.ducksters.com/science/experiment_light_travel.php
10 Experiments using light and optics: https://www.youtube.com/watch?v=ydfeJQ2cWv0
Discover why the sky is blue and the sunset is red: https://www.exploratorium.edu/snacks/blue-sky
Lesson Plans
Speed of Light: https://mpt.pbslearningmedia.org/resource/lsps07.sci.phys.energy.lightspeed/speed-of-light/
Physics for kids, the Science of Light: https://www.ducksters.com/science/light.php
Physics for kids, Theory of Relativity – Light and Time: https://www.ducksters.com/science/physics/relativity_light_time.php
How far away is that storm?: http://www.eo.ucar.edu/kids/dangerwx/tstorm6.htm
Waves – Light and Sound: https://www.alvordschools.org/cms/lib/CA01900929/Centricity/Domain/2616/1st%20Grade%20Teachers%20Guide%20Complete.pdf