3rd level Solve linear equations Using an equation to solve a word problem. An equation is a mathematical expression that features an equals sign. Solving an equation means finding a missing value ...

Physics and Python stuff. Most of the videos here are either adapted from class lectures or solving physics problems. I really like to use numerical calculations without all the fancy programming ...

The equation 3 j 6 = 9 can be shown on a function machine by writing out the functions that have been applied to j in the order they happened. BIDMAS means multiplications happen before subtractions.