For her 6th grade honors class, math teacher Ana Sepúlveda wanted to make geometry fun. She figured her students “who live and breathe soccer” would be interested to learn how mathematical concepts ...

In this lesson students are introduced to Frederick Jackson Turner and how early Census data, when combined visually with maps, effectively demonstrated the end of the frontier. By reading Turner’s ...

Students will be able to develop and explain a particle-level model to describe their observations of water dissolving salt, the water evaporating, and the salt crystals re-forming. Dissolving a solid ...

Students will be able to develop and explain a particle-level model to describe evaporation and condensation in the context of the water cycle. The water cycle depends on the processes of evaporation ...