Why do we need an Order of Operations? What is 5 + 3 x 4? What is 3 x 4 + 5? Students work through examples to get at these questions and work with the order of operations to simplify numerical expressions.

Which operation should I use to solve this problem? How can I use bars to model what is going on? What are scholarships and how do I earn them? Students apply their knowledge of decimal operations to answer these questions.

Sixth graders apply their knowledge of the order of operations to simplify numerical expressions for a second day.

Numbers don't stop at 20! We spend the last week or so of school looking at the numbers beyond 20. Today we do it by looking at the number line.

Second graders solve change unknown story problems using a number line. This lesson gives students a new strategy to attach change unknown word problems.

Second graders will become more comfortable making sense of equations presented in missing answer (traditional) and missing number ( nontraditional) formats.

Playing a game for the order of operations engages students in math fact review and builds fluency.

The double number line will help students figure out problems that involve two quantities.

The number line is a tool 6th grade students will need throughout the year and this activity will allow students to explore and become familiar with it.

SWBAT identify the subtraction and addition sign and understand their function by hopping a bunny up and down a number line.

Includes a short summary on the representation of a complex number.

A number line is shown below. The numbers $0$ and $1$ are marked on the line, as are two other numbers $a$ and $b$. Aligns with 7.NS.A.1.

The purpose of this task is for students to use the volume of a rectangular prism to see why you can multiply three numbers in any order you want and still get the same result. Aligns with 5.OA.A and 5.MD.C.5.

Making ten is one of the foundational strategies for developing flexible numerical thinking, accuracy, and efficiency.

The big idea of this lesson is that three (or more) numbers can be grouped together and added. The order of this grouping doesn't matter.

Students will flip two cards over and determine the sum. Base ten blocks could be used for additional help.

SWBAT place numerals in order from least to greatest on a number line.

This resource allows students to practice fraction computations. Students are able to select parameters that include the type of operation, numerator and denominator max and min, common denominator, and improper fraction. There are ten...

Second graders can find patterns in 4-digit numbers that will help them when counting over decades and centuries.

Understanding place value is critical to the Common Core Standards for second grade. Without a concrete understanding, 2nd graders may not fully grasp the meaning of the digits.

[Free Registration/Login Required] In this formative assessment task, learners are asked to explain how rational and irrational numbers differ and why the product of a non-zero rational number and an irrational number is irrational....

Use this tutorial to learn what imaginary and complex numbers are, how to write them, and how to perform operations with them. Offers step-by-step examples, video explanations of the examples, and practice questions with answers.

This task challenges a student to demonstrate understanding of the concepts of factors and multiples.

A card game where students compete to lay down cards - each containing fractions - which sum to zero. The game provides practice for the students who have a working knowledge of the operations with fractions.