I have created a full year (36 weeks) of short math lessons that are aligned with the common core standards. I have divided these into 4 nine week sets that gradually become more challenging. The daily lessons may be used as morning work, as mini-lesson frames, as focus areas for calendar math, or as daily maintenance and review. Standards of focus include MCC3.MD.1,4, MCC3NBT.1,2, MCC3.OA.7, MCC3.NF.1,2,3. Each nine-week set comes complete with an answer key. All the third grade common core math domains are addressed: Algebraic thinking, base ten operations, fractions, measurement and data, and geometry. Additional sets may be purchased at Teacher's Sidekick.