We often think that sticky is icky, but Zoey finds out that nature and technology use stickiness in all sorts of useful ways. From snot and glue to burrs and Velcro, the world needs sticky stuff.

Teacher's guide available under Additional info tag.

MY GREAT CHALLENGE: Challengers compete to make their “gecko” mascots climb a wall using different-sized magnets. IN THE FIELD: Zoey visits an aeronautics lab to find out about glue so strong it can hold an airplane together. BIG IDEA IN STEM: Sticky substances and materials have many uses both in nature and by humans.