How much longer is a blue whale than an orca? Teach your students to use bar models and number sentences with variables as they solve these wild word problems!

Make multiplication a snap with this hands-on math lesson! Your students will learn how to easily multiply large numbers using base-ten blocks and the strategy of breaking apart by place value.

Teach your students to use bar models and multiplication to find a fraction of a whole number.

Teach your students to multiply by multiples of 10, up to 1,000.

Your fourth graders will not only have fun creating and playing an equivalent fractions memory game in this interactive lesson, they will also become much stronger mathemeticians in the process.

Empower your students with the opportunity to design decimal subtraction problems with a given difference (answer). Use this lesson on its own or as support for the lesson Step By Step Decimal Subtraction.

Students will have a blast deepening their understanding of the order of operations, with this lesson which incorporates an interactive team game.

Get your students to enjoy the fall weather while making beautiful leaf patterns inspired by Andy Goldworthy.

This experiment is a fun lesson that captures the ears, eyes, and minds of students! It combines writing, reasoning, predictions, and teamwork with candies and soda to produce a memorable lesson on chemical reactions and energy.

A calm jar works as a visual reminder when teaching emotional regulation techniques. In this lesson, students will practice mindfulness of emotions and create a class calm jar together as a class.

Windmills have been around for generations to grind food and create energy. During this challenge, students will use various materials and put their engineering skills to work by creating their own windmills.

Help your students understand the connection between skip counting, multiples, and multiplication with this lesson. Teach it on its own or use it as support to the lesson Clap Counting with Multiples.

Put the FUN! in function tables with this engaging, interactive lesson that will have your students generating their own patterns and tables.

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.

In this lesson, your students will explore the world through a variety of picture books. They will examine a variety of themes through each text that they read and determine any common themes among the texts.

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.

Teach your students about symmetry with real life objects! Have them draw lines of symmetry for various shapes, food items, and objects.

Let's play jeopardy! In this interdisciplinary lesson, students learn about American rivers, create game questions about the rivers, and then play the game.

Making mistakes helps us learn! Your students will flex their analytical muscles to pinpoint errors in multiplication problems using arrays. Use the lesson on its own or as support to Base Ten Arrays for Multi-Digit Multiplication.

The order of operations is a critical concept for fourth graders to grasp in preparation for algebra. This introductory lesson on the order of operations will teach your students about the helpful acronym PEMDAS.

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.

According to research about growth mindsets, certain kinds of praise can stifle growth, while others promote learning and achievement. In this lesson, students will be able to identify and use praise words that support growth mindset.

Algebra concepts can be challenging for students in upper elementary and middle school. This lesson introduces students to the idea of a missing or unknown number while also considering the order of operations.

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

Introduce your students to divisibility rules with a lesson that encourages deep thinking and meaningful math talk between peers.

Go to any length to test your students' understanding of perimeter calculations. Students will use their understanding of the perimeter of rectangular shapes to create rectangles that have different side measurements but equal perimeters.

Idioms can be a pain in the neck to understand! Help your students become acquainted with many of the English language's funny and confusing idioms in this lesson that has them using their creativity to act out or illustrate idioms.

In this lesson, students will express their love for someone they deeply care for. They will complete a guided mindfulness practice to send kind wishes and will make a craft that represents their love for this person.

In this lesson, students will watch a video on growth mindset and work in pairs to share their ideas about growth vs. fixed mindsets. They will then collaborate to design their own skits about growth vs. fixed mindsets.

Let's solve multi-digit division problems! Students will feel more confident with their division than ever with this lesson that helps them practice dividing multi-digit numbers.