Video (Prevent forwarding)

I am attempting to create slides for students to watch videos and complete a check for understanding example all while preventing students from forwarding. I have tried to use the sink time: this.time and it continues to fail and prevents the video from playing. Wondering why this.time does not work. I wanted to say something like

time: when this.time > button.timeSincePress(999) 0 otherwise this.time    

The only work around for me is this slide. Does anyone have any other better ideas?

Not sure. I think because it’s a circular dependency, which doesn’t fly in Desmos.

I thought about doing something like this, but instead have your CFU question (with instructions to pause) pop up during the video during a certain time window. You could then limit moving forward based on whether the student answered the question or not.

Interesting, anytime I have a time: when this.time = 10 otherwise ??? I’m unsure of what to type after otherwise to make no change? Advice?

That’s what I’m saying. I don’t know that it will ever work (maybe it does) because it’s setting the time based on the time, which is circular.

@Daniel_Grubbs
This seems to be working great for me. You probably have something better but it prevents fast forwarding and includes a cfu at any designated time. Properties of Logarithms • Activity Builder by Desmos