As young readers journey into the natural world, they will discover that numbers, patterns, shapes -- and much more! -- can be found in everyday plants and animals. What if animals and plants knew math, just like us? Would snowflakes all fall from the same height in the sky? Would otters spread themselves evenly across lakes? Would groundhogs be aware of the date? In Sizing Up Winter , the third title in the Math in Nature series, nature comes to life to help children grasp concepts of time and measurement.