This kid friendly grade common core checklist is a 6 page resource that is a fun and very visual way for teachers, students and parents to see third grade skills. Includes all common core standards in a condensed and student (and parent) friendly format.
This is a handy math reference page that I keep in my students' daily folder. They also have a laminated one in their desks. It keeps important math vocabulary right at their fingertips and the illustrations really help them remember concepts.