Using toothpicks, and pool noodles, your little architects constructed their very own structures! Playing with a variety of building materials is critical for the development spatial thinking, or envisioning where different items go in relation to each other as they build. Deciding whether their pool noodle goes over or under another pool noodle, or whether it is aligned or perpendicular to it, are just the kinds of skills that support later learning in science, technology, engineering and math.