Draw a direct line to Physical Science in STEM with our circuit drawing pen! The limitless combinations of modules creates an exciting opportunity and is scalable to fit all ages, grades and curriculum standards. Complexity grows as your knowledge grows, allowing you to explore topics in the guided workbook along with the AR App - CS Circuits. (iOS & Android). With 30 pens and 250+ modules, it’s perfect for 1-to-1 and collaborative learning groups. Modules: 25 9V Battery Adapters 50 LEDs 25 Switches 5 Multi-Colored LEDs 5 Blinkers Pens & Accessories: 30 Circuit Scribe Conductive Ink Pens 25 Steel Canvases 25 Stencils 1 Inventor's Notebook 1 Jumper Sticker Sheet