In this 3.MD.4 Third Grade Common Core Lesson, students generate measurement data by measuring lengths using rulers marked with halves and fourths of an inch.

In this 3.MD.6 Third Grade Common Core Lesson, studentsfind the area of given rectangles by counting squares or using a formula.

In this 3.NF.1 Third Grade Common Core Lesson, students understand a fraction as the quantity formed by 1 part when a whole is partitioned into equal parts.

In this 4.G.2 Fourth Grade Common Core Lesson, students classify shapes based on presence or absence of specific lines and angles.

In this 4.MD.1 Fourth Grade Common Core Lesson, studentsknow relative sizes of measurement units within one system of units within a single system of measurement.

In this 4.MD.5 Fourth Grade Common Core Lesson, students recognize angles as obtuse, acute or right by playing War!

IIn this 4.NF.3 Fourth Grade Common Core Lesson, students add fractions and mixed numbers with common denominators.

In this 4.NF.6 Fourth Grade Common Core Lesson, students convert between decimals and fractions when the denominator is 10 or 100.

In this 4.OA.1 Fourth Grade Common Core Lesson, students interpret a word problem as an equation,picture, group description and an answer.

In this 4.OA.3 Fourth Grade Common Core Lesson, students solve multi-step word problems posed with whole numbers using the four operations.

In this 5.MD.4 Fifth Grade Common Core Lesson, students measure volumes by counting unit cubes, using cubic cm, cubic in, cubic ft, and improvised units.

In this 5.MD.5 Fifth Grade Common Core Lesson, students solve real world problems involving volume.

In this 5.NF.2 Fifth Grade Common Core Lesson, students solve word problems involving adding and subtracting fractions with uncommon denominators.