Teach your students to add and subtract fractions with like denominators using a strategy that works for both operations: converting mixed numbers into improper fractions and back again!

It's as easy as one, two, three...four! Introduce your students to subtracting decimals in the tenth and hundredth place using a four-step process.

Challenge students to listen to instructions to create expressions with parentheses. Use this lesson on its own or as support to the lesson PEMDAS: Order Up.

Encourage your students to describe elements of a division problem using peer supports and an information gap game. Use this lesson on its own or as support to the lesson Multi-Digit Division.

Use this lesson to teach your students how the different parts of a brain are responsible for any act they do. This lesson will teach your students how a 3.5 pound organ controls a grown human being!

Get your students excited about rounding with this activity that lets them plan a party while they learn!

Challenge students to relate the multiplication of decimals to that of whole numbers. Have them justify their estimations in partners. Use this lesson on its own or use it as support to the lesson Multiply Decimals with Models.

Teach your students to round decimals to whole numbers to estimate a quotient. In this lesson, students will have so much fun playing the Estimation Station game, they might forget they are learning!

In this lesson, your students will calculate and illustrate area for rectangles using area models, where one side length includes a fraction.

In this cooperative economics activity, students learn about the division of labor in a real way. Students will be able to see first hand the advantages and disadvantages of the division of labor.

Graphs bring data to life and help us draw conclusions about the information presented. In this lesson students will engage with three different kinds of graphs by asking and answering interpretive questions.

Do your students understand the power of 10? This lesson will allow your students to see the utility of the power of 10 in mathematics and come to a concrete conclusion of how 10 impacts the value of mathematical equations.

Help your students show their understanding as they explain how to add fractions with unlike denominators. Use this lesson on its own or as support to the lesson Make It Work! Adding Fractions with Unlike Denominators.

Discuss correct decimal placement using logical arguments and by multiplying whole numbers. Use this lesson as a standalone lesson or use it as support to the lesson Multiply Decimals.

Area models are building blocks to more complicated multiplication and division. Use this lesson to refresh students on the relationship between multiplication and area to prepare them to use the area models strategy with larger numbers.

Teach your students the power of persuasion by preparing them to write persuasive letters. This lesson, complete with brainstorming activities, allows young writers to unlock their inner rhetoricians.

Help your students' favorite characters come to life in new adventures as student writers draft new endings to their favorite stories.

Help students transition from a visual representation of dividing decimals to using the standard algorithm for dividing decimals by a whole number. Use this lesson on its own or as support for th lesson Diner Division.

Get your students excited and test their knowledge of comparing decimals with this fun decimal "war" game!

How well do your students know decimals? In this lesson, introduce your students to decimal multiplication using models.