update lesson

docs/lessons.md

@@ -6,12 +6,8 @@
 ### ~column 
 
 ## O365 Integration
-* [Graphing Temperature](/lessons/graph-temperature), create a charting app for simulating and measuring the actual temperature 
+* [Data Experiments: Graphing & Charthing](/lessons/charting), create a charting app for simulating and measuring the actual temperature 
-* [Graphing Acceleration](/lessons/charting), create a charting app for simulating and measuring the acceleration applied to the micro:bit
+* [Probability Experiments: Coin Toss App](/lessons/probability), create an charting app to demonstrate probability using any coin
-* [Graphing Light Level](/lessons/light-level), create a charting app for simulating and measuring the amount of light measured by the micro:bit
-* [Graphing Rotation](/lessons/rotation), create a charting app for simulating and measuring the amount of rotation by the micro:bit
-* [Graphing Magnetic Force](/lessons/magnetic-force), create a charting app for simulating and measuring the magnetic force of objects
-* [Probability App](/lessons/probability), create an charting app to demonstrate probability using any coin
 
 ## Beginner
 

docs/lessons/charting.md

@@ -8,8 +8,11 @@ Acceleration
 
 ## Quick Links
 
-* [activity](/lessons/charting/activity)
+* [Graphing Temperature](/lessons/graph-temperature)
-
+* [Graphing Acceleration](/lessons/charting) 
+* [Graphing Light Level](/lessons/light-level)
+* [Graphing Rotation](/lessons/rotation)
+* [Graphing Magnetic Force](/lessons/magnetic-force)
 
 ## Prior learning/place of lesson in scheme of work
 

docs/lessons/graph-temperature/activity.md

@@ -0,0 +1,72 @@
+# charting activity
+
+Measure the acceleration on the micro:bit in the "z" direction. 
+
+### ~avatar avatar
+
+Welcome! This activity will teach how to use the 1st micro:bit to chart the second micro:bit's acceleration in the "x" direction. Let's get started!
+
+### ~
+Let's measure `acceleration (mg)` and then `send number`. `Acceleration` is measured in **milli-gravities**, so a value of -1000 is equivalent to -1g or -9.81m/s^2. We will be able to get the acceleration value (g-force), in the specified "x" dimension. `Send number` will broadcast a number data packet to other micro:bits connected via radio.
+
+```blocks
+radio.sendNumber(input.acceleration(Dimension.X));
+```
+### ~
+We want to display the acceleration forever. In order to do so, we need a `forever` loop. A forever loop will repeat code in the background forever.
+
+```blocks
+basic.forever(() => {
+    radio.sendNumber(input.acceleration(Dimension.X));
+});
+
+
+```
+### ~
+We want to register code to run when a packet is received over radio. We can implement this code by adding `on data received`.
+
+```blocks
+basic.forever(() => {
+    radio.sendNumber(input.acceleration(Dimension.X))
+})
+radio.onDataReceived(() => {
+    
+})
+```
+### ~
+Finally, we want to chart the acceleration. So we must first implement `plot bar graph`. `Plot Bar Graph` will display a vertical bar graph based on the value and high value. In order to transfer the receive the number from the 1st micro:bit, we must implement `receive number` to constantly display a vertical bar graph based on the value. Remember, the value will equal to the micro:bit's acceleration in the "x" direction.
+
+```blocks
+basic.forever(() => {
+    radio.sendNumber(input.acceleration(Dimension.X))
+})
+radio.onDataReceived(() => {
+    led.plotBarGraph(radio.receiveNumber(), 1023)
+})
+
+```
+### ~
+Notice that moving the micro:bit the farthest direction in the x direction will be -1023 on the charting beneath the simulator. The second observation will be that the LEDs will be full brightness on the 2nd micro:bit. There is a single LED turned on with the 1st micro:bit. Additionally, the graphs will reflect 0 acceleation for the 1st micro:bit. In this scenario, if you are adjusting the acceleration in the simualator, you are also changing your chart that will be produced.  
+
+![](/static/mb/acc.png)
+
+### ~
+NOTE: The colors of the charts reflect the color of the micro:bit simulator. In this instance, the micro:bits are blue and green. So the colors of the line graphs reflect the colors of the micro:bit
+ 
+ ### ~
+After running this simulatation several seconds by moving the micro:bit side to side in the x direction, you are ready to graph or chart the accceleration of the micro:bit.  We want a printout of our acceleration on Excel. We will graph the fluctuating acceleration of the simulation experiment. 
+
+![](/static/mb/acc2.png)
+
+### ~
+Finally, you must open the Excel CSV file by clicking on the data.xls file that was downloaded to Downloads Folder. 
+
+![](/static/mb/data3.png)
+
+### ~
+Have fun reviewing your simulation and analyze the acceleration by chart the Excel data using Excel.
+
+* Connect the first micro:bit to your computer using your USB cable and run the charting script on it.
+* Connect the second micro:bit to your computer using your USB cable and run the charting script on it.
+* The first person and second person take turns tilting the micro:bit in the "x" direction while the other player charts the data on the micro:bit!
+* Review and analyze the actual micro:bit device acceleration data on Excel