> For the complete documentation index, see [llms.txt](https://computational-thinking-in-room11.gitbook.io/room-112-dhs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://computational-thinking-in-room11.gitbook.io/room-112-dhs/software-development/compass/navigation-using-directions/d-rt.md).

# d= rt

D = Distance R = Rate or Speed and T = Time

Now that you have the ability to measure the duration of events return your focus to building a navigational device.

### Starting Points: Hopefully these directions make more sense!!

* [ ] **Consider moving your Navigational Out of  the Forever Block so that you can show OTHER things on your LED Buttons**
* [ ] Can you tell the captain how long she traveled in a certain direction?
* [ ] Can you ask the captain to enter a speed of travel
  * [ ] How might I do that?
    * [ ] set a starting speed of say 6  MPH
    * [ ] let the captain hit the A button or Shake the Micro: bit to increase the  speed by 1 MPH per event
    * [ ] change the speed to be equal to the number indicated by the captain 
      * [ ] so if speed starts at 60 MPH and he hits the A button 5 times then the speed is 65 MPH
    * [ ] So you know how long she traveled, and now you know she traveled 60 MPH 
    * [ ] d = rt! You can tell  him how many miles per hour he traveled in a certain direction
      * [ ] d = distance
      * [ ] rate = speed 
      * [ ] time = duration or time elapsed
      * [ ] So you can tell the Captain how FAR they traveled  based on how long they traveled and how fast they traveled
    * [ ] Can you convert MPH to knots since that his the language captains use?
* [ ] Can you allow the captain to choose between N S E or W as the desired  direction by rotating the micro:bit?
* [ ] Can you help  the captain head 1 direction for a certain number of seconds
* [ ] Can you incorporate the next 4 directions?
* [ ] Can you help  navigate from ONE place to another?
  * [ ] travel North for 1  minute
  * [ ] Turn East and travel for 6 minutes?
* [ ] Can you design how this would be mounted on the captain? on the boat? 

Um...how fast do boats travel

![](https://2507214486-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-LpUPSf3tCxHePJxNjfg%2F-LsySMjjI0Tul4nK77do%2F-LsyT8nzeqFYf_T5B9SA%2Fimage.png?alt=media\&token=a8222a6a-3dbf-4bd8-b612-b5230ec8dc4f)