Looking for a little extra ruler/measurement practice for your students? Check out these BOOM™ cards! The cards focus on METRIC measurement for the science/Math classroom and provide more than a dozen examples of items for students to measure and identify the correct measurement (sometimes in millimeters, sometimes in centimeters). The ruler on the cards is moveable so the students have to correctly line it up against the item and read the measurement. Such great practice!!!Boom™ cards are t