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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

Minimum (Quadratic Functions)

The lowest y-value of a quadratic function when its parabola opens upward.

Algebra 1

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Monomial

A single-term expression — a number, a variable, or their product.

Algebra 1

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Negative Exponent Rule

A negative exponent means the base can be moved to the denominator with a positive exponent.

Algebra 1

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Negative Reciprocal

The reciprocal of a number with the opposite sign.

Geometry

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No Solution (Systems of Equations)

A system with no ordered pair that satisfies all of its equations.

Algebra 1

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Non-Rigid Transformation

A transformation that changes the size or shape of a figure.

Geometry

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Numerator

The top number in a fraction.

Algebra 1

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Obtuse Angle

An angle that measures more than 90° but less than 180°.

Geometry

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Opening Downward (Quadratic Functions)

Describes a parabola that opens downward because its leading coefficient is negative.

Algebra 1

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Opening Upward (Quadratic Functions)

Describes a parabola that opens upward because its leading coefficient is positive.

Algebra 1

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Opposite Angles

Angles that are directly across from each other when two lines or segments intersect.

Geometry

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Opposite Rays

Two rays that share an endpoint and extend in opposite directions.

Geometry

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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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