• Equipotential Surfaces
• Work and Electric Field
• Number of Paths
• Charged Sphere
• Parallel Plate Capacitor (coming soon)

• Earth's Gravitational Potential Energy
• Near Earth Gravitational Potential Energy (coming soon)

• Heat Capacity
• Thermodynamic States
• Covariation
• Quantifying Change
• Squishability of Water Vapor
• Derivatives of Internal Energy

For many high quality activities, see the Raising Calculus to the Surface project website.

• Isoheight on Surfaces

• Vector Line Integrals