Klutz Lego Gear Bots Science Building Kit Invisible Ink Activity Book 62 Elements to Make 8 Different Versions of Moving Machines

- DUAL CREATIVITY SET: Includes LEGO Gear Bots building kit with 62 elements for creating 8 different versions of moving machines, plus a fun invisible ink activity book for secret messages - BUILDING POTENTIAL: Create 8 different versions of action-packed mechanical models that move using gears, wheels, and other LEGO elements included in the set. (makes 1 machine at a time) - STEM LEARNING: Perfect for young engineers, this kit teaches basic mechanical principles and gear systems while providing hands-on building experience - SECRET ACTIVITIES: The included Ultimate Invisible Ink Activity Book comes with a special ink pen for writing hidden messages and completing covert missions - AGE-APPROPRIATE: Designed for children to build, learn, and play independently while developing problem-solving and creative thinking skills