Overview: In this project-based learning (PBL) math activity students will face a real world situation and use local grocery store ads to budget and create a grocery shopping list. Adding, subtracting, and estimating/rounding are all practiced in this engaging activity. Teacher instructions (lesson plan) and an example are included. Grades: 3rd grade, 4th grade, 5th gradeCommon Core: Math 3.NBT.A.1, 3.NBT.A.2, 3.OA.D.8, 4.NBT.3, 4.NBT.4, 4.OA.3, 5.NBT.A.4, 5.NBT.B.7ALSO CHECK OUT: Math Assessmen