9 a.m.-4 p.m., Kids are introduced to science, technology, engineering and math in a fun and challenging way! Program helps children build problem-solving skills, discover how things work, and is a motivator to learn math and science concepts. Camp dates: Dec. 30, Dec. 31; Jan. 2 and Jan. 3. Ages 4-grade 2: junior LEGO, $80 (1 day); grades 3-8: video game design (4 days), $330. Campers must bring a lunch. Hammond Park, 705 Hammond Dr., Sandy Springs, 30328. Register by Dec. 16 by going to: http://sandyspringsga.gov/registration or calling 770-730-5600.