Use the websites in the order listed for online practice.
#1 - Measuring Angles Multiple Choice: http://www.ezschool.com/Games/Math/Angles/Angles.html
#2 - Measuring Angles: http://www.mathplayground.com/measuringangles.html
#3 - Estimating Drawing Angles: http://www.mathplayground.com/alienangles.html
#4 - Drawing Angles: http://mathcasts.org/gg/student/angles/angles/angle_draw1.html