This short video and interactive assessment activity is designed to teach fifth graders about adding, subtracting, multiplying and dividing.

This short video and interactive assessment activity is designed to teach fifth graders about adding, subtracting, multiplying, and dividing with parentheses.

This short video and interactive assessment activity is designed to teach fifth graders about adding, subtracting, and multiplying.

This short video and interactive assessment activity is designed to teach fifth graders about adding and subtracting.

This short video and interactive assessment activity is designed to teach fifth graders about adding and subtracting with parentheses.

CK-12 Algebra Explorations is a hands-on series of activities that guides students from Pre-K to Grade 7 through algebraic concepts.

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

Students will be able to demonstrate how much they have learned and retained during the lessons presented for unit 1.

Demonstrates the role of parentheses in a written expression by solving one with and without the parentheses. [2:06]

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This short video and interactive assessment activity is designed to teach fifth graders about adding and subtracting - missing operation.

The lesson explains the order of operations. An explanation and examples are included.

In this 40-day module, students build on their Grade 3 work with unit fractions as they explore fraction equivalence and extend this understanding to mixed numbers.  This leads to the comparison of fractions and mixed numbers and the representation of both in a variety of models.  Benchmark fractions play an important part in students’ ability to generalize and reason about relative fraction and mixed number sizes.  Students then have the opportunity to apply what they know to be true for whole number operations to the new concepts of fraction and mixed number operations.

Find the rest of the EngageNY Mathematics resources at https://archive.org/details/engageny-mathematics.

Brush up on your math skills relating to the order of operations then try some practice problems to test your understanding.

Play this interactive math game and practice your order of operation rules at the same time. If you can't remember just click on the link "order of operations," for a quick refresher!

Gain a basic understanding of the distributive property in arithmetic through this easy to understand video tutorial. Additional resources are available as part of a paid subscription service. [10:06]

Gain a basic understanding of the order of operations by watching this easy to understand video tutorial. Additional resources are available as part of a paid subscription service. [9:39]

Expressions

Type of Unit: Concept

Prior Knowledge

Students should be able to:

Write and evaluate simple expressions that record calculations with numbers.
Use parentheses, brackets, or braces in numerical expressions and evaluate expressions with these symbols.
Interpret numerical expressions without evaluating them.

Lesson Flow

Students learn to write and evaluate numerical expressions involving the four basic arithmetic operations and whole-number exponents. In specific contexts, they create and interpret numerical expressions and evaluate them. Then students move on to algebraic expressions, in which letters stand for numbers. In specific contexts, students simplify algebraic expressions and evaluate them for given values of the variables. Students learn about and use the vocabulary of algebraic expressions. Then they identify equivalent expressions and apply properties of operations, such as the distributive property, to generate equivalent expressions. Finally, students use geometric models to explore greatest common factors and least common multiples.

Students express the lengths of trains as algebraic expressions and then substitute numbers for letters to find the actual lengths of the trains.Key ConceptsAn algebraic expression can be written to represent a problem situation. More than one algebraic expression may represent the same problem situation. These algebraic expressions have the same value and are equivalent.To evaluate an algebraic expression, a specific value for each variable is substituted in the expression, and then all the calculations are completed using the order of operations to get a single value.Goals and Learning ObjectivesEvaluate expressions for the given values of the variables.