Which is lighter?, beachball, watermelon, Which is heavier?, cake, cupcake, Which is lighter?, car, motorcycle, Which is heavier?, 2 liter soda, soda can, Which is lighter?, notebook, paper, Which is heavier?, feather, rock, Which is lighter?, book, desk, Which is heavier?, frog, dog, Which is lighter?, horse, cat, Which is heavier?, mouse, computer, Which is lighter?, table, laptop, Which is heavier?, water glass, water pail

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