In celebration of the Miami Children's Museum's ninth anniversary on Watson Island, Miami-Dade County residents pay reduced admission of $9 for the whole month of September. Children and families are invited to help the museum's mascot, MiChiMu, celebrate his ninth birthday with games, arts and crafts, an animal show, cupcakes and other fun activities. Admission also includes entrance to the "Wizard of Oz" interactive exhibit opening Sept. 22. 10 a.m.-6 p.m. daily. Sept. 8 mascot birthday from noon-5 p.m. Miami Children's Museum, 980 MacArthur Causeway, Watson Island. During September, Miami-Dade residents' admission is $9. Free for members and children under 1. $16 adults and children regular. Details: (305) 373-5437 or www.miamichildrensmuseum.org.