Make a math mystery! In this lesson, help your students understand the relationship between addition and subtraction and how a missing addend word problem is represented with a number sentence.

This lesson provides students with the opportunity to critically think about data. Use this lesson alongside Line Plots: Representing the Length of Classroom Items or as a stand alone lesson.

Change is inevitable, even for story characters! In this lesson, your students will determine how a character changes throughout a story by focusing on the character’s dialogue and actions.

It’s time to get those magnifying glasses out! In this lesson, students will act as detectives, searching for clues about idioms. Who can find the clues that lead to the meanings of various idioms?

This engaging lesson plan provides first and second grade students with an opportunity to learn all about female inventors.

There are many ways to represent skip counting, so help students find their chosen method! Use this as a stand alone lesson or as a pre-lesson for Skip Counting to Understand Multiplication.

You need the length and the width to find the area of a rectangle or square, but what if one piece of information is missing? Use this lesson alongside What's My Area? or on its own.

Support your students as they collect, organize, and discuss measurement data! Use this lesson independently or alongside Making Measurements for Line Plots.