lesson-4.md

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-## Lab notebook lesson 04 ##
+## Lab notebook lesson 4 ##
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+**Date:** 3rd of March 2017
+
+**Group members:** Samuel Bjørn Jessen, Mikkel Kaysen, Martin Wiberg Petersen and Peter Thorsen
+
+**Activity duration:** 6 hours
+
+## Goal ##
+The goal of this lab session is to construct a robot, that will follow a black line and stop at the end of the line when the robot drives into a goal zone - a green rectangular piece of paper at the end of the black line. The idea is that we will try to use the light sensor to detect three different colors.
+
+## Plan ##
+Follow the instructions given in the lesson plan \[1\].
+
+## Results ##
+
+## References ##
+\[1\] : [Lesson Plan](http://legolab.cs.au.dk/DigitalControl.dir/NXT/Lesson4.dir/Lesson.html)