Texas Education Agency
Texas Gateway: Ionic Bonds: Electron Dot Formulas
Given descriptions, diagrams, scenarios, or chemical symbols, students will model ionic bonds using electron dot formulas.
CK-12 Foundation
Ck 12: Chemistry: Ionic Bonding
[Free Registration/Login may be required to access all resource tools.] Covers how ions interact with one another in ionic bonds.
Vision Learning
Visionlearning: Chemistry: The Nature of the Chemical Bond
This site talks about ionic, polar covalent, and non-polar covalent bonding.