update seismograph act

docs/lessons/seismograph/activity.md

@@ -16,9 +16,8 @@ Welcome! This activity will teach how to use the micro:bit to chart the strength
 
 1. Prepare Tape: Measure and cut approximately 10mm of tape. The tape will be fastened to a micro USB cable.  
 
-2. Fasten Tape: Fasten tape to the micro USB cable and to the plate.  
+2. Fasten Tape: Fasten tape to the micro USB cable and to the plate. Attach the micro:bit to the micro:bit USB. 
 
-3. Attach micro:bit: Attach the micro:bit to the micro:bit USB. 
 
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@@ -26,14 +25,14 @@ Seismograph built, let's code!
 
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-4. Go to Codemicrobit.com
+1. Go to Codemicrobit.com
 
     Click or tap Create Code
     Click or tap Block Editor
     
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 We will measure `acceleration (mg)` in terms of strength. Get the acceleration value (milli g-force), as measured in strength.
 
@@ -43,7 +42,7 @@ input.acceleration(Dimension.Strength);
 
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 Use the plot bar chart to visualize the acceleration on the LED screen of the micro:bit in the specified range. You implement plot Bar Graph to display a vertical bar graph based on the "value" and "high" value. Then you must insert acceleration in based on strength. 
 
@@ -56,7 +55,7 @@ basic.forever(() => {
 
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 Finally, we subtract the gravity from acceleration strength. 
 
@@ -69,7 +68,7 @@ basic.forever(() => {
 
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 Notice that making vibrating the object below the micro:bit changes the values and the line appears as a wave to display the value of the strength as measured in milli-gravities. By making the object below the micro:bit vibrate, you will observe changing values of the micro:bit. Also, the LEDs shown on the Bar Graph fluctates based on the movement of the micro:bit strength. 
 
@@ -80,14 +79,14 @@ NOTE: The black color reflects the micro:bit device.
 
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 Vigorously move the micro:bit in the micro:bit simulatator by moving the micro:bit image from side to side. Every time the micro:bit moves in the x direction in the simulator,  you are generating data points that can be reviewed in Excel. The more attempts to move the micro:bit from side to side, the more data being saved in Excel. After you have vigarously moved the micro:bit simulator from side to side for a sufficient amount of time, you are ready to graph or chart the accceleration of the micro:bit. We want a printout of our acceleration on Excel that can be graphed in Excel. 
 
 
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 We want to chart the data collected by using a tool in Excel. 
 
@@ -96,7 +95,7 @@ The final part of this experiment is opening and reviewing the data in the Excel
 
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 First, click or tap on the first two columns (A, B) to  include the time of the data being collected; b) the results of acceleration data on the micro:bit  
@@ -111,7 +110,7 @@ Use the Recommended Charts command on the Insert tab to quickly create a chart t
 
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 ![](/static/mb/chart1.png)
@@ -126,7 +125,7 @@ Tip: If you don’t see a chart type that you want, click the All Charts tab to
 
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 ![](/static/mb/chart_title.png)
 
@@ -134,7 +133,7 @@ Tip: If you don’t see a chart type that you want, click the All Charts tab to
 
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 ![](/static/mb/elements_styles_filters.png)