In this lesson, students write and evaluate algebraic expressions at specific values. They will also use variables to represent numbers and write expressions when solving a real-world or mathematical problem.

Students will determine the amount needed to add to the catapult to destroy the king's castle for him in this interactive activity.

In this lesson, students will estimate capacity and the relationship between several unusally shaped containers. They will verify relationships, express the relationship using variables, and apply the expressions to determine equivalent portions for each standard unit.

This tool, created by Science NetLinks, challenges students to consider mathematical equations to get from one number to another in a math maze. Students use a series of addition, subtraction, and multiplication equations to reach their goal.

This resource is part of Tools4NCTeachers.

In this lesson, students explore the communitive property in the context of a word problem to determine if students have the same number of items

This resource is from Tools4NCTeachers.In this lesson, students explore the associative properties as they solve word problems with three addends to develop the concept of representing and solving problems involving addition.  This lesson format may be used with any problem type appropriate for the grade.  This file includes the lesson, student work samples, student recording sheets, and exit tickets.  Remix this lesson to add extension ideas or addtional student work samples. 

This resource is part of Tools4NCTeachers.

Students are asked to solve a real world problem, show their work using pictures, numbers or words, and record a matching equation. A scoring rubric is included. The task may be used for instructional or assessment purposes.

This resource is part of Tools4NCTeachers.

This set of resources contains sample Number Talk lessons. Lesson 1 builds addition fluency using double ten-frames by making ten and adding more. Lesson 2 builds addition fluency with equations by making ten and adding more. Lesson 3 uses dot cards as representations of numbers to build math language as well as fluency with decomposing numbers within 10.

This resource is part of Tools4NCTeachers.

In this lesson, students develop their understanding of odd and even numbers. Students will begin to notice what is happening when an even and an even are added together, odd and odd, even and odd. They make generalizations by playing the game "Even Steven or Odd Rod".

This resource is from Tools4NCTeachers.In this lesson, students will solve higher-level word problems involving three addends.  The rich problems allow for multiple solutions, so the focus will be on student thinking rather than correct answers.  Students will explore various strategies to solve and will be asked to attempt new strategies, including writing matching equations, once that has been modeled by others.   This resource includes a lesson plan, answer key, and printable exit ticket.  Remix this lesson to include extension activities of photos of student work samples.

This resource is from Tools4NCTeachers.In this lesson, students spin spinners containing 3-digit numbers.  Then, students use their 1000 boards to find sums of the numbers they spun.  There are a variety of spinners provided in order to allow for differentiation.

In this lesson, students encounter a situation in which they must solve for the value of a variable. The equations are in the form of p = qx, in which q, x, and p are all whole number values. This CYBERCHASE activity is motivated by an episode in which the CyberSquad plays a game against Hacker to catch enough "gleamers" to power up the Cyberspace ship. If they win, they get the Encryptor Chip. But first, they must figure out the relationship between gleamers and power glows.