We already have an estimate of how much NaOH is needed: Student Response ml
Next, we'll get a more precise measurement for the endpoint
In the second interactive video set, select the volume increment that includes the estimated volume, Student Response ml. Also, select Trial #10. Load the video and observe. Continue viewing the videos for different volumes near the Student Response ml, point to find the endpoint.
For eg.. if the volume that you recorded in the First video in Question 1 is around 13.7 ml, then you will select the volume increment range as 13.5-14.0 ml. when watching the slower paced video which is below Question 4. This the volume that you will record here, which is more accurate.
Measure the the precise amount of NaOH added at the endpoint of the titration. (Remember, the solution will begin to stay a persistent faint pink at the endpoint.)

___________ ml of NaOH