diff --git a/docs/lessons/charting.md b/docs/lessons/charting.md
index 1cb4a9c4..5b2b45d1 100644
--- a/docs/lessons/charting.md
+++ b/docs/lessons/charting.md
@@ -7,7 +7,7 @@ Create a charting app for simulating and measuring the acceleration applied to t
 Acceleration
 
 ## Quick Links
-* [activity](/lessons/charting/acceleration) 
+* [activity](/lessons/charting/activity) 
 * [challenge](/lessons/charting/challenge) 
 * [quiz](/lessons/charting/quiz) 
 * [answers](/lessons/charting/quiz-answers)
diff --git a/docs/lessons/seismograph/activity.md b/docs/lessons/seismograph/activity.md
index f604fe5b..423df1e0 100644
--- a/docs/lessons/seismograph/activity.md
+++ b/docs/lessons/seismograph/activity.md
@@ -109,7 +109,7 @@ Every time the micro:bit moves in any direction,  you generate data points that
 
 Please find seismogrph experiment obervations: 
 
-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. 
+First, notice that moving the micro:bit in any direction, you will change the acceleration value, which is being displayed as a milli-gravities value. By moving the micro:bit, there will be a changing acceleration value. 
 
 ![](/static/mb/lessons/seismograph7.png)