Electric Paint Pen,used as a liquid wire to draw or print graphical circuits, or even as a conductive adhesive eliminating the need for soldering equipment. also work as a conductive adhesive, providing a safer alternative to using soldering irons, 10ml Pen
Lets Go Investigating Temperature, Lab book, Aimed especially for elementary teachers, this lab book contains ten engaging temperature experiments, Activities for grade 2 through 5, Lots of teacher tips, Clear illustrations to facilitate underst