This animation shows the separation of a solvent and a solution by a semipermeable membrane, osmosis, and osmotic pressure.
Practice naming parent function and transformed function: TI technology optional.
This article provides several simple activities to explain black holes to students.
Students use a wide range of objects to create an artificial phylogeny based on morphology. The family tree that they produce will be artificial in the sense that the objects used have not actually evolved from each other.
This article introduces the Plant Scientists Investigate project, and presents three plant-related activities for primary-school children. Students will compare the carbon dioxide concentrations of inhaled and exhaled air, visualise their own oxygen consumption, and weigh up the importance of plant conservation versus economic development.
This article offers suggestions for several demonstrations pertinent to the atmosphere, pollution, and global climate change.
In this role-playing activity, students experience how the human immune system protects the body against infection.
Students create a density column using four different colored layers of sugar water. Students will choose varying amounts of sugar to add for each solution.
Worksheet that describes the effect of k on a function.
This animation shows the transfer of solvent from a solution of low concentration to a solution of high concentration through the vapor phase.
Students explore how variables such as temperature and pressure affect each other in the environment, using real scientific data.