pxt-microbit Accessibility PR (#529)

* Accessibility changes
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Sam El-Husseini
2017-09-07 13:42:08 -07:00
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Through math class, most middle school students are already familiar with coordinate grids and mapping x and y coordinates on a plane. To review some terms:
#### Axes
## Axes
* The basic coordinate grid a student learns has two axes,
>* an x-axis which runs horizontally and
* a y-axis which runs vertically.
#### Origin
## Origin
* These two axes meet at a point called the origin where both the x and the y values are zero.
* On this basic coordinate grid, the origin is in the lower left corner of the grid and has the coordinates (0,0).
#### Coordinate pair
## Coordinate pair
* The first value in a coordinate pair is the x value and the second value in a coordinate pair is the y value.
* A simple way to remember which value comes first is to remember their order in the alphabet. The letter x comes before the letter y in the alphabet and the x coordinate comes before the y coordinate in a coordinate pair.
#### Coordinate value changes
## Coordinate value changes
* On a basic coordinate grid,
>* the value of the x coordinate increases left to right and is a measure of how many units a point is horizontally from the origin

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The game can be played with just paper and pencils or you could use small tokens and markers, like coins, buttons, or paper clips to represent the ships.
 
### Notes:
## Notes:
* Place students grids in sheet protectors or laminate them so they can be used again and again with white board (dry erase) markers.
* The official rules of Battleship are easily found on the internet. Modify them as needed for your particular class.

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A work log is a short, bullet point list of what they worked on, and how long it took. Stick to the facts. It shouldnt take more than thirty seconds or so to write up a work log. Students should do one for every class. A shared Microsoft OneNote notebook is a great way to keep a work log that students can update regularly. Alternately, you might use a collaborative shared document, or your classroom management system, or even e-mail.
#### Sample Work Log
### Sample Work Log
>**_April 11_**<br/>
_20 min. Created code that reacts when pins P0 and P1 are pressed._<br/>
_0 min. Talked with Mr. Kiang about how to attach wires so they wont fall off_<br/>