MR / Schenectady, NY.Yates Arts-in-Education Magnet School, Grade 2.Arts-Themed Urban Elementary School.Girl (7, African-American) and boy (7, African-American and Caucasian) hold two objects of differing sizes and density. The smaller item (the dictionary) is harder to hold because it is heavier and has more mass than the larger item (the ball)..MR: Gib1 Art1.© Ellen B. Senisi