This initial video uses CollegeBoard's notorious 2018 escalator FRQ to introduce the concept of contextual accumulation functions. RIP 0.3 person per second. Duration: 32:13

Here, we will review the concept of an accumulation function as an integral that gathers area under a curve, and then we work through Example 1, a contextual problem involving a graph rather than an equation. Duration: 24:55

The previous video inadvertently ended prematurely, so this video will finish that particular problem. Blame Canada. Duration: 2:37

Example 2 presents a contextual problem using explicitly stated equations. The contextual problem in this case involves patrons entering and exiting a zoo. No lion tamers allowed. Duration: 22:58

This final contextual problem involving milk cows is presented using a table of values, rather than an equation or graph. Average value and a right Riemann sum also make a (possibly) unwelcome appearance. Duration: 18:40