Kids bring ideas to life in 3D with this award-winning Pen Set: The ideal entry-point to 3D printing! Plastic extrudes and hardens rapidly allowing kids to literally create anything they can think of in 3D. Perfect for STEM Learning Fun: Inspires creativity, design, planning, building and, spatial understanding. Child-Safe: Designed with no external hot parts, completely safe for kids ages 6-13. Charge & Play: It's easy to get started. Simply charge up your pen, turn it on, feed in a strand of filament, and start drawing in 3D! What comes with your rental:  Teacher Kit: (Each Kit Contains) - 1x Teacher's checklist, 1x 3Doodler poster, 1x Welcome Note, 1x Cheatsheet, 2x Lesson Plans, 1x EDU Booklet, 1x Start Activity Guide, 1x DoodleBlock™ Guide, 2x Unblocking Tools, 1x Troubleshooting Guide Students' Kits: (Each Kit Contains) - 3Doodler Start 3D Pen(s), Micro-USB Charging Cable(s), Start DoodlePad, 6x DoodleBlocks per set of 3 pens,