Simple Machines Screw Pens heirloom-quality toy that will last

heirloom-quality toy that will last for generationsCuriously attractivePerfect for those seeking toys supporting open-ended and unscripted play

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

Use it as a backdrop to display student work

Just press a button to release the staple magazine

Simple Machines Screw Pens heirloom-quality toy that will lastMPN: 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