Common Core Instruction: Solving Addition and Subtraction Word Problems with Tape Diagrams
This Mathematics Common Core lesson features fourth grade students from Fort Ann Elementary School in Fort Ann, NY. The lesson focuses on Math Standards 4.OA.3 - Solve multi step word problems posed with whole numbers and having whole-number answers using the four operations, including problems in which remainders must be interpreted. Represent these problems using equations with a letter standing for the unknown quantity. Assess the reasonableness of answers using mental computation and estimation strategies including rounding AND 4.NBT.4 - Fluently add and subtract multi-digit whole numbers using the standard algorithm. Students work in teams to explore and solve subtraction problems modeling with a tape diagram.