A+ Click: Math Tests for K-1 to K-12Heidi ReinaJune 10, 2009Word Problems A+ Click is an interactive collection of more than 6000 math word problems for grades 1 to 12. Problems focus on common core standards for understanding, spatial reasoning and problem solving. Ad-free and no sign in to use. Previous Post Shmoop US History Next Post CCBC Bibliographies and Booklists