This QuickMath activity expands a basic expression that you enter. Gives answer and describes step-by-step how the answer was reached.

An astrobiologist and a physicist explain how mathematics is universally critical to helping understand nature and the cosmos in this video from KAET. In the accompanying classroom activity, students discuss the mathematics in the video, including the use of algebra, and then practice writing, reading, and evaluating algebraic expressions in a class bingo game. [5:45]

Watch as the organ function grinder from the National Museum of Mathematics represents a quadratic function in a variety of ways. This video focuses on converting a verbal expression into an algebraic representation.

The purpose of this task is to identify the structure in the two algebraic expressions by interpreting them in terms of a geometric context. Students will have likely seen this type of process before, so the principal source of challenge in this task is to encourage a multitude and variety of approaches, both in terms of the geometric argument and in terms of the algebraic manipulation.

Simplify expressions with rational numbers using the distributive property of multiplication. This student-generated video focuses on using the distributive property to create equivalent expressions when multiplying by negative numbers and fractions.

Simplify expressions with rational numbers using the distributive property of multiplication. This student-generated video focuses on using the distributive property to create equivalent expressions when multiplying by negative numbers and fractions, which can then be simplified.

This StudyCards set begins with "what is an equation?" and continues to the meaning of solving an equation. The function approach is used to solve the equations.

Common misused words are defined. Examples of how to use them correctly are provided. Some examples are "all right" to "would", "as good or better than", and "as to whether."

Parts (d) and (e) of this task constitute a very advanced application of the skill of making use of structure: in (d) students are being asked to use the defining property of even and odd functions to manipulate expressions involving function notation. In (e) they are asked to see the structure in the system of two equations involving functions.

This set contains statistics questions regarding surveys and survey designs. The student differentiates between a systematic sample, a convenience sample, a simple random sample (SRS), and a stratified random sample.

This task is not about computing the final price of the shirt but about using the structure in the computation to make a general argument.

This task illustrates A-SSE.1a because it requires students to identify expressions as sums or products and interpret each summand or factor.

Learn how to interpret written statements with parentheses and write them as mathematical expressions. [9:10]

Khan Academy learning modules include a Community space where users can ask questions and seek help from community members. Educators should consult with their Technology administrators to determine the use of Khan Academy learning modules in their classroom. Please review materials from external sites before sharing with students.

The purpose of this task is to emphasize the adjective "geometric" in the "geometric" series, namely, that the algebraic notion of a common ratio between terms corresponds to the geometric notion of a repeated similarity transformation.

The resource investigates simplifying radical expressions. The notes consist of formulas and examples.

Find a quick, concise explanation of what variables are. An example is given and clearly explained.

Take a look at this tutorial to learn exactly what a 'term' in a polynomial is all about. [5:11]

Learn how to write simple algebraic expressions. [1:38]

Khan Academy learning modules include a Community space where users can ask questions and seek help from community members. Educators should consult with their Technology administrators to determine the use of Khan Academy learning modules in their classroom. Please review materials from external sites before sharing with students.