Bring your machine dreams to life with our biggest Gears. building set yet. Kids can engineer their own STEM creations with Gears. Gears. Gears. Mega Builds from Learning Resources. Clocking in at a massive 235 pieces, this STEM building set inspired by our best-selling Gears. Gears. Gears. series is the build-it-yourself toy kids need to create twisting, turning robots, cars, and machines. Kids can follow along with the included STEM Activity Guide, or use their imaginations to devise open-ended builds of their own—with 235 pieces, there's no shortage of design options. Every time they build a new Gears. creation, kids also boost their early engineering, critical thinking, and other essential STEM skills. All pieces included in Gears. Gears. Gears. Mega Builds work with all other Gears. building sets, so the possibilities are as fun as they are limitless. This set is also perfect for school STEM club and other group play.