Need something to liven up your scientific study of simple machines beyond pictures in books? Need hands-on exposures? Need examples of basic tools and how they are used in the world? This unit can supplement your existing curriculum or stand alone as an introductory or basic resource. The teaching suggestions and great visual materials would, also, make a great unit at year’s end or adaptation for distance learning. The PBL project would work as homework or a classroom based assignment, too. He