No captions Captions Stop the video above first if it is playing.
No captions Captions Stop the video above first if it is playing.
Sasha and Keoni review the relationship that they discovered between the value of p in the equation y = x2/(4p) and the width of the graph of the parabola.
Episode Supports
Focus Questions
For use in a classroom, pause the video and ask these questions:
1. [Pause video at 1:06]. What does it mean for a parabola to be wider than another parabola?
2. [Pause video at 3:33]. How does Keoni know where to place the red directrix?
Supporting Dialogue
Focus students’ attention on conjecturing and providing evidence for their conjectures:
What does it mean for one parabola to be skinnier than another?
Math Extensions
1. On the worksheet, add two more parabolas: one parabola with a p-value of 1/8 and another with a p-value of 1.5.
2. What do you notice about those two additional parabolas?
Captions
