Alpacas Beginner 10/02/2015 Alpha Capricorni Star Beginner 07/13/2012 Analytical Balance - Labeled Beginner 05/25/2012 Analytical Balance - Unlabeled Beginner 05/25/2012 Anatomy of a microscope Beginner 01/15/2015 Animal cell cycle Beginner 04/29/2013 Ankole-Watusi cow Beginner 03/24/2015 Ant on a Leaf Beginner 06/30/2015 Antelope Canyon Beginner 03/05/2014 Antennae Galaxies Beginner 07/13/2012