This 1.G.2 First Grade Common Core Lesson teaches that two shapes can be put together to make a new shape.

This 1.MD.1 First Grade Common Core Lesson gives students practice with measuring objects with cubes and ordering objects based on their lengths.

In this 1.NBT.1 First Grade Common Core Lesson, students will practice counting on from 1 to 120 using multiple different activities.

In this 1.NBT.6 First Grade Common Core Lesson, students will practice subtracting 10 from a given number using a number line.

In this 1.OA.4 First Grade Common Core Lesson, students practice finding the missing added using subtraction as strategy to solve.

In this 1.OA.8 First Grade Common Core Lesson, students find the unknown whole number in addition equations up to 20.

Using L.1.2 First Grade Common Core Lesson, students use commas to separate single words in a series.

In this 2.MD.3 Second Grade Common Core Lesson, students estimate and then measure lengths using units of inches, feet, centimeters, and meters.

In this 2.MD.5 Second Grade Common Core Lesson, students will add and subtract within 1000 to solve measurement word problems using different strategies.

In this 2.MD.6 Second Grade Common Core lesson, students will add and subtract within 100 on a number line.

In this 2.MD.7 Second Grade Common Core Lesson, students tell and write time from analog and digital clocks to the nearest five minutes, using a.m. and p.m.

In this 2.NBT.1 Second Grade Common Core Lesson, students understand that the three digits of a three-digit number represent amounts of hundreds, tens, and ones.

In this 2.NBT.2 Second Grade Common Core Lesson, students will practice counting by 1s and skip count by 5s, 10s and 100s by putting together a puzzle.

In this 2.NBT.3 Second Grade Common Core Lesson, students will read and write numbers to 1000 using base-ten numerals, number names, and expanded form.

In this 2.NBT.4 Second Grade Common Core Lesson, students compare two three-digit numbers based on place value using >, =, and < symbols.

This 2.NBT.9 Second Grade Common Core Lesson includes 2.NBT.9 Worksheets, 2.NBT.9 Activities, 2.NBT.9 Assessment, and 2.NBT.9 Poster.

In this 2.OA.2 Second Grade Common Core Lesson, students practice adding and subtracting within 20 and know all sums from memory as quickly as possible!

In this 3.G.2 Third Grade Common Core lesson students partition shapes into parts with equal areas and write a related fraction.

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.MD.7 Third Grade Common Core Lesson, studentsfind the area of a vegetable garden by relating addition and multiplication.