Students quantify the percent of light reflected from solutions containing varying concentrations of red dye using LEGO MINDSTORMS NXT bricks and light sensors. They begin by analyzing a set of standard solutions with known...

Students study the physical properties of different fluids and investigate the relationship between the viscosities of liquid and how fast they flow through a confined area. Student groups conduct a brief experiment in which they...

Learn about selective pressure and how genes are involved in adaptations by watching this video on pocket mice. The video focuses on the research of Dr. Michael Nachman, "whose work in the field and in the lab has quantified the...

[Free Registration/Login may be required to access all resource tools.] In this online tutorial students will define a mixture and understand why mixtures are different than pure substances. They will classify mixtures as homogeneous or...

Animation going from the Milky Way all the way down to inside an atom by powers of ten. This animation helps illustrate and quantify the powers of ten.