Looking for an example with a table of values/discrete datapoints? That video is here: https://youtu.be/_1rdzM5CrcY
Access the PDF of the video notes here: https://clairegibbons.com/s/riemann-sum-examples.pdf

This video walks through an example of finding the left, right, and midpoint Riemann sums (L3, R6, and M2) with different rectangle widths for a single function (x^3 + 1 from x=-1 to x=5).

0:00 Intro: what we are going to do
0:34 Example setup/problem statement
1:15 (part 1) Left Riemann Sum
4:48 (part 2) Right Riemann Sum
7:43 (part 3) Midpoint Riemann Sum
10:52 Interpreting the answers
12:52 Thanks for watching!