• Read the lesson page first and sketch the geometric picture before doing any calculations.
• Work a few definite-integral estimates by hand before using closed-form antiderivatives.
• Keep track of whether each problem is asking for an accumulation, an area, or an antiderivative.
• Attempt any challenge exercises last, once the core techniques feel automatic.

• Riemann sums, area, and accumulation as the starting intuition.
• Definite integrals and how limits turn finite sums into continuous totals.
• Antiderivatives, the fundamental theorem of calculus, and substitution.
• Applications to area between curves, average value, displacement, and simple growth models.

No prerequisites.

The course is meant to make integration feel like one coherent idea instead of a disconnected list of tricks.