Hands-on construction sets with spinning gears build early STEM skills such as problem solving, critical thinking, and perseverance. Includes a power motor, flashing lights, glow-in-the-dark stickers, springs, gears, and more in a handy storage tub; and an Activity Guide. Button-cell batteries for flashing lights included. Motor requires 3 AA batteries, not included. 121 pieces. Ages 5 and up.