Differentiation Make sure that students are watching actively by assigning them to identify the systems at one of the four benchmark scales: atomic-molecular, microscopic, macroscopic, or large scale. Modifications Extending the Learning Students can explore these Powers of Ten on interactive websites: Scale of Universe: http://htwins.net/scale2/ Cell Size and Scale: http://learn.genetics.utah.edu/content/cells/scale/ The Universe Within: http://micro.magnet.fsu.edu/primer/java/scienceopticsu/powersof10/ Cosmic Voyage with Morgan Freeman narration: https://www.youtube.com/watch?v=qxXf7AJZ73A
