diff --git a/docs/lessons/seismograph/activity.md b/docs/lessons/seismograph/activity.md
index 825c19f1..5ba11afe 100644
--- a/docs/lessons/seismograph/activity.md
+++ b/docs/lessons/seismograph/activity.md
@@ -93,15 +93,17 @@ First, notice that moving the micro:bit in the simulator in any direction, you w
 
 ## 3. 
 
-The flat, black colored line should appear. The block line will measure acceleration of the micro:bit. The black line appears directly beneath the colored line that measures acceleration of the micro:bit simulator. 
+The flat, black colored line should appear directly beneath the colored line. The block line measures the micro:bit acceleration. 
 
-![](/static/mb/lessons/seismograph6.png)
+![](/static/mb/lessons/seismograph5.png)
 
-First, notice that moving the micro:bit in any direction, you will change the acceleration value,   which is being displayed as the same color as the micro:bit. 
+First, notice that moving the micro:bit in any direction, you will change the acceleration value,   which is being displayed as the same color as the micro:bit. By moving the micro:bit, there is a changing acceleration value. 
 
 ![](/static/mb/lessons/seismograph7.png)
 
-Next, notice that by moving the micro:bit, 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. 
+Second, the flat colored horizontal line will start moving to plot the value of the strength as measured in milli-gravities. The horizontal line's movement is based on the micro:bit. 
+
+![](/static/mb/lessons/seismograph6.png)
 
 ## 4.