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!

Challenge students to use their understanding of standard algorithm division to list multiples while solving division problems. Focus on their language use and opinions in this pre-lesson to the Partial Quotients Method lesson.

Students are at the center of learning as they create and illustrate their own Halloween math problems that show the relationship between addition and multiplication - helping them transition conceptually from the concrete to the abstract.

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.

Dive deep into word problems with this lesson that teaches students to sketch base-ten blocks to add multiples of 10 and two-digit numbers. Use alone or with the lesson plan Let's Build It! Two-Digit Addition.

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.

In this lesson, students will learn the term "troubleshooting" and practice solving problems using both tangible and virtual tools.

Let’s make math real! Engage students in learning about measurement by measuring objects around the classroom and creating word problems for peers to solve.

Have students describe the process for solving multiplication problems and ask clarifying questions while in partnerships. Use this lesson as a standalone lesson or as support to the lesson Eye See... Multiplicity.

Facilitate rich math conversations with this lesson on finding the missing information in problems related to the area of rectangles and squares. It may be taught by itself or used as support to the lesson Finding Area: Furnishing A Room.

10, 20, 30, and up! In this lesson, students learn strategies for multiplying one-digit numbers by multiples of ten (10 through 90) through practice problems and playing a fun, hands-on game.