Students will be asked to choose Customary units of mass from a field of 3 or 4. Objects they are to estimate the mass of include but are not limited to: an elephant, apple, backpack, school bus, cruise ship, magazine, skateboard, pair of shoes, horse, and more.-20 Interactive Boom Cards-Self-grading & Super Fun-Play on Smartboards, Chromebooks, tablets, & computersPreview the first 4 cards for free here.New to Boom Learning? Check out this video that explains all about using Boom Cards™.Boom Ca