Z-kai Learning Lab (450 Mass. Ave in Arlington) is offering free, in-person LEGO workshops for ages 5-15 to explore robotics in three levels: Basic (ages 5+), STEAM (ages 9+), and Advanced (ages 11+). Register for 1:30PM or 3:30PM on December 7, 8, 9, 14, 15, or 16 (no 3:30PM workshops on December 9 or 16). Email zkaiusa.staff@gmail.com for more information or to register.