Which number doesn't belong? This lesson requires students to think critically as they determine which number is not a factor of a particular number. Teach it on its own or as support for the lesson Factors Over the Rainbow.

Introduce your students to multiplying multi-digit numbers with this lesson that gives them plenty of practice and has them play a game with a partner that makes the lesson fun!

In this lesson, students use cubes to build arrays to represent factor pairs of numbers within 100. They use this understanding to identify multiples as well.

Help! The numbers in our equations have run away and left their answers alone! In this lesson, students will review their math facts and knowledge to solve Ken Ken like puzzles and bring the numbers back to their places.

Freshen up on your understanding of division word problems with long division and one-digit divisors! Use this lesson to help students identify key division terms and solve word problems.

Help your students discover patterns when multiplying by five.

Students will use the inverse relationship between multiplication and division to complete an area formula in a real-world situation. Use this lesson on its own or as support for the lesson The Case of the Missing Rectangle Side.

With this pastry themed lesson, your students will apply addition strategies to solve two-step, three-digit addition word problems. Finding the solutions will be sweet!

This lesson is designed for fourth graders to practice their skills with the order of operations along with multiplying fractions and adding or subtracting decimals.

This lesson combines students' knowledge of US geography and their creative writing skills in one fun activity!

Get your students comfortable with discussing multiple strategies to solve subtraction problems with this lesson on two- and three-digit subtraction. It may be taught independently or as support for the lesson Subtraction with Regrouping.

Sor Juana Inés de la Cruz was a 17th century writer and philosopher who today is considered one of the first documented feminists and advocates for women’s education. In this lesson, students will read two nonfiction texts about Sor Juana and discuss her life and accomplishments before writing an opinion piece about her.

How are plants’ traits affected by environmental factors? In this integrated science and reading lesson, students will use multiple sources to identify and determine how traits are influenced by the environment.

With this lesson, your students will see how the order of the factors does not affect the product in a multiplication expression. Use this on its own or alongside You're On a Roll! Practicing Multiplication Facts.

Why make things harder on ourselves? Teach your students to decompose numbers to make math easier! Use this as a stand alone lesson or a pre-lesson for Decompose to Multiply: 6, 7, 8, and 9.

Teach your students to calculate fractions of 100 using a number line model.

Help your students subtract with confidence by sharing two different strategies. Use this lesson to build on students’ understanding of subtraction and to evaluate this key skill.

Input some patterns to T-charts in this lesson. Use this lesson about input and output boxes as a precursor to finding patterns within word problems.

Want to strengthen your student’s multiplication and division skills? This lesson uses fact families to help students practice those skills.

Delicious multiplication! In this sweet lesson, your students will learn how to relate multiplication to repeated addition using candy counters.

Do you feel like your students are on a merry-go-round when it comes to rounding? This lesson will give your student control of the “ride” and give them tools to use when rounding.

Support your students' math fluency by teaching them about the relationship between multiplication and division through fact families. This lesson can stand alone or be used as a pre-lesson for the Do You Know Your Math Facts? lesson.

Teach your students to add and subtract time using number lines. Your class will be gladly moving backwards and forward to the minute solving for related word problems.

Teach your students to find the perimeter of polygons using real world examples. They will make polygon pictures using tangrams and practice finding the perimeters of the polygons in their masterpieces.

This lesson helps students review rounding to the nearest hundred. Your students will practice rounding using manipulatives.

In this lesson, your students will play with cards to practice giving fractions a new decimal name. They will be able to convert fractions to decimals by the end of this lesson.

Practice calculating perimeter with the placement of carnival-themed games with given rectangular dimensions. Your students will use grid paper to determine the location of all the games they choose to make the perfect carnival.

It's not enough to just memorize the multiplication table! It helps students to know how to explain their strategy to find the product too. Teach this lesson on its own or use it as support for the lesson Slap and Roll Timed Multiplication.

Allow your students to explore the pros and cons of different strategies used to find the area of rectangles. Use this as a stand alone lesson or as a pre-lesson for the Multiplication and Area in the Community Garden lesson.

Teach your students four simple steps to help them solve multiplication and division word problems with confidence.