In this lesson, your students will think about situations that require them to calculate area. Use it as a standalone lesson or as support to the What Is the Area of Your Classroom? lesson.

Help students visually represent multiplication with mixed numbers and whole numbers. Use this lesson as a standalone lesson, or as support for the lesson Multiplication of Mixed Numbers with Area Models.

In this lesson, students will add three-digit numbers using expanded form addition and standard algorithm addition. They'll explain their answers and highlight the steps for each of the strategies.

Use this lesson to introduce the concepts of capacity and volume with young learners. This hands on lesson can be used as a scaffolded pre-lesson to Capacity Comparison.

In this lesson, students will construct their own number lines and bar models to find equivalent fractions.

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!

Who doesn’t like to spend money and plan parties? Students will subtract two-digit numbers as they calculate the remaining money for their party supplies. They will subtract in multiples of ten and focus on place value.

Get students moving in this fun lesson that involves a relay race style game! This lesson focuses on dividing decimals by whole numbers.

Students will learn to convert metric units by applying concepts in word problems. Exercises and worksheets incorporate length (meters), and optional practice offers more instructions on mass (grams) and volume (liters).

Teach your students to read time to the nearest five minutes by counting by fives! Use this lesson as a stand-alone support lesson for ELs or alongside Tricky Time Telling.

Encourage students to explain their processes when converting from a mixed number to an improper fraction, and back again. Use this lesson on its own or as support to the lesson Single Strategy for Adding and Subtracting Mixed Numbers.

Use this lesson to introduce the tool of base-ten blocks to your students. This scaffolded EL support lesson can be used as a stand-alone activity, or prior to teaching Three-Digit Addition with Base-Ten Models.

Get your students comfortable with distinguishing and discussing prime and composite numbers with this lesson that involves visuals and a card game. Use it as a standalone lesson or as support to the lesson Prime and Composite Numbers.

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.

Analyzing and discussing arithmetic patterns builds a strong number sense in your students! Use this as a stand alone lesson or as a pre-lesson for Boom, Clap! Patterns in the Multiplication Table.

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

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.

Getting ready to add fractions? This lesson reviews how to add fractions with unlike denominators using number lines. Students will focus on understanding the process and reasoning behind each step.