diff --git a/docs/lessons/seismograph/activity.md b/docs/lessons/seismograph/activity.md
index a1734761..140b5b3e 100644
--- a/docs/lessons/seismograph/activity.md
+++ b/docs/lessons/seismograph/activity.md
@@ -89,9 +89,9 @@ Science: We now need to use the micro:bit to Analyze Data and chart for the stre
 
 ## 1. 
 
-First, notice that moving the micro:bit in the simulator in any direction, you will change the acceleration value, which is being displayed as the same color as the micro:bit simulator. And notice that by moving the micro:bit simulator, there is a changing acceleration value. Second, the flat colored horizontal line will start a waving line to display the value of the strength as measured in milli-gravities. Finally, notice that the LED display will fluctate based on the movement of the micro:bit simulator. 
+First, notice that moving the micro:bit in the simulator in any direction, you will change the acceleration value, which is being displayed as the same color as the micro:bit simulator. Also, notice that by moving the micro:bit simulator, there is a changing acceleration value. Second, the flat colored horizontal line will start a waving line to display the value of the strength as measured in milli-gravities. Finally, notice that the LED display will fluctate based on the movement of the micro:bit simulator. 
 
-![](/static/mb/lessons/seismograph8.png)
+![](/static/mb/lessons/analyze20.png)
 
 ## 2. 
  
diff --git a/docs/static/mb/lessons/analyze20.png b/docs/static/mb/lessons/analyze20.png
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