Discovering Volumes of Revolution with Discs


Volumes of Revolution by Discs

1. Check the box "show single disc. Slide the black, then blue sliders. 2. Then check the box "Show n differential rectangles" and increase the number in the box, b. 3. Play with the sliders. 4. Make a note about what you observe to share with the class.

Disc action

More interesting Curve discovery

1. Check both boxes. Play with the sliders 2. What do you notice as you increase your b (what does the b stand for in this slider)? 3. What do you notice as you decrease your dx? What does this decrease in dx represent?