Simple Machines Screw Pens 8 string pens and 12

8 string pens and 12 double-sided activity cards

Use it as a backdrop to display student work

3 x 5 inch index cardsFeatures snap closure and includes 5 dividers and adhesive label tabsAcid-free polypropyleneAssorted colors include seaside blue

but a cactus

Simple Machines Screw Pens 8 string pens and 12MPN: 005646 UPC: 895452001343 The screw, another of the simple machines, converts a circular motion (the turning of the screw) into a linear motion. It also lets you amplify the force a great deal, since turning the screw only moves the end of the screw a small amount. This classic wooden model offers children a basic concept of the laws of physics. Desktop sized. Key Features : i : Illustrate the principle behind the operation of a simple machine. ii