A sports introduction class for children ages 4 to 7 will meet Saturdays beginning Oct. 23. The class will let children explore the fundamentals of baseball, basketball and soccer while learning the basic skills of teamwork and safety. Team strategies and enjoyment are stressed. The five-week class will meet from 10 to 11 a.m. through Nov. 20 in Costeau Park, Costeau Street at Alicia Parkway, Laguna Hills. The cost is $28. Information: (949) 707-2600.