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256

terms • Algebra 1 & Geometry

Math Vocabulary

Every term, the visual way. Each word comes with examples, a non-example, and often a short video—so students meet a concept by seeing it, not memorizing it. Find a term, project it, and let the noticing begin.

Visual examples

Many have videos

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A 5-minute routine

Introduce Any Term

Don’t lead with the definition—lead with the visual. Show the examples and non-example before the meaning, and let students build the word themselves.

1

Show, don’t define

Project the term with its examples and non-example. Hide the definition.

2

Notice & wonder

Ask: what do you notice? What makes the examples different from the non-example?

3

Describe it

Students try to put the meaning into their own words—then discuss as a class.

4

Reveal the definition

Now show the real definition. Play the video to lock it in.

Term

Parabola

Video

Example

Example

Non-Example

The Reveal

A parabola is the U-shaped curve that graphs a quadratic function.

Showing 12 of 256 terms

Inequality Notation

Symbols such as <, >, ≤, and ≥ used to compare quantities.

Algebra 1

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Infinite Solutions (Systems of Equations)

A system with infinitely many ordered pairs that satisfy all of its equations.

Algebra 1

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Initial Value

The output value of a function when the input is zero.

Algebra 1

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Input

The value entered into a function.

Algebra 1

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Interior Angles

Angles located inside a polygon or between two lines.

Geometry

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Interior of an Angle

The region between the two sides of an angle.

Geometry

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Interval Notation

A way to represent a set of numbers using parentheses and brackets.

Algebra 1

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Isosceles Triangle Theorem

The base angles of an isosceles triangle are congruent.

Geometry

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Legs (Triangle)

The two equal sides of an isosceles triangle.

Geometry

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Legs of a Right Triangle

The two sides that form the right angle in a right triangle.

Geometry

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Like Radicals

Radical terms with the same radicand and the same index.

Algebra 1

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Line (Algebra)

The graph of a linear equation, extending infinitely in both directions.

Algebra 1

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Showing 12 of 256 terms

Every term here is pulled straight from our Algebra 1 and Geometry courses—where the same visuals come to life in full video lessons.

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