It's a wintery Saturday morning and Elinor, Olive, and Ari are getting ready to go out and play in the snow with other kids, but Olive wonders why she has to wear so many winter clothes. Elinor becomes fascinated by the Velcro on Ari's new watch and convinces her friends to help her find out how it works. First, they make a list of what Velcro sticks to and what it doesn't stick to, but they need more observations, so they head out onto the playground.
