Through exploring the phenomenon that it is easier to float on salt water than on fresh water, students will develop a conceptual model for molecules and how the arrangement of molecules affects density.

Density is the ratio of mass to volume. Density will be introduced to students by a demonstration of coke verses diet coke. The teacher will then solve density problems for the students on the board. The class will then complete a lab on...

A simple activity that investigates the effect of heat on the volume of a gas. The activity is presented in lesson plan format that meets NSES standards.

Learners find the densities of objects based on sinking or floating in this activity that demonstrates Archimedes Principle.

AmphibiaWeb, a site inspired by global amphibian declines, is an online system that allows free access to information on amphibian biology and conservation. This site is filled with amphibian facts, a glossary of terms, species numbers,...

As part of the study of Matter, the students will determine the density of standard percent sugar solutions through hands on experimentation. In laboratory groups, students will graph a standardized curve of the experimental data. The...