The learner explores the purpose of organizational mission statements and practices writing a statement that contains the four elements outlined.

In this highly interactive and animated object, learners follow a step-by-step process to reduce algebraic fractions, which contain no addition or subtraction, to their simplest, most elementary form. Immediate feedback is provided. This activity has audio content.

Learners read definitions of atomic symbols, atomic numbers, and mass numbers and then answer questions about the number of neutrons, protons, and electrons in select elements.

Students read brief descriptions of atoms, molecules, elements, and compounds, and complete a matching exercise that pictures these particles and molecules as pieces of taffy.

In this animated activity, students view the plastic pellets in a profile extrusion machine being melted as the temperature of the heating elements is elevated by a time proportioning control system.

The learner reads an explanation of all of the elements that comprise a future-state map. A map is shown.

In this screencast you'll define how perception influences your world view and learn the elements of the perception process.

Learners examine the periodic table to identify metallic elements that have either fixed or variable oxidation states.