Check out this playlist for all the videos covering level 6 basic maths skills
http://www.youtube.com/playlist?list=PL2De0DVeFj3XnBKBNAScc5SVwmreGznNN&feature=view_all
6.19 Standard Ruler and Compass Constructions - Basic Maths Core Skills Level 6 / GCSE Grade D
This video is part of a series that is linked to a specific system for improving Basic Maths skills. This one is a Level 6 Basic Maths Skills video for students trying to progress to level 7