Exact Equations
A series of free Differential Equations Video Lessons.
How to solve exact differential equations?
Exact Equations Intuition 1 (proof)
Chain rule using partial derivatives (not a proof; more intuition).
Exact Equations Intuition 2 (proof)
More intuitive building blocks for exact equations.
Exact Equations Example 1
First example of solving an exact differential equation.
Exact Equations Example 2
Some more exact equation examples
Exact Equations Example 3
One more exact equation example
Check out our most popular games!
Fraction Concoction Game:
Master fractions in the lab: mix, add, and subtract beakers to create the perfect concoction!
Fact Family Game:
Complete fact families and master the link between addition & subtraction and multiplication & division.
Number Bond Garden:
Clear the board by matching number pairs that sum to ten in this garden-themed mental math puzzle.
Online Addition Subtraction Game:
Practice your addition and subtraction skills to help the penguin find its mummy.
Penguin Solitaire
Penguin Solitaire is a fun game that aims to move all cards to the foundations to build four full sequences. There are two versions here: Penguin (Tuxedo) and Penguin (Original).
We welcome your feedback, comments and questions about this site or page. Please submit your feedback or enquiries via our Feedback page.