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Free math slides

Free math slides, ready to teach

Eleven interactive slides for maths and physics lessons. Open one to present it full screen: click for each step, and drag the sliders to change the numbers while the class watches. Like one? Make your own copy and change anything. Free, in your browser, no account needed to present.

Watch the 14-slide tourMake your own, step by step
Waves: y = A sin(kx): A graph of y = A sin(kx) with live sliders for A and k, to change the amplitude and the frequency in front of the class.
Functions

Waves: y = A sin(kx)

A graph of y = A sin(kx) with live sliders for A and k, to change the amplitude and the frequency in front of the class.

Open and present
Expanding a square: (a + b)² worked out one line per click, ending on a² + 2ab + b².
Algebra

Expanding a square

(a + b)² worked out one line per click, ending on a² + 2ab + b².

Open and present
Where does a parabola cross zero?: Factorise x² − 2x − 3, then a point travels to each root: x = −1 and x = 3.
Algebra

Where does a parabola cross zero?

Factorise x² − 2x − 3, then a point travels to each root: x = −1 and x = 3.

Open and present
The derivative is a slope: A tangent slides along the curve with a live slider, and its slope updates as it moves.
Calculus

The derivative is a slope

A tangent slides along the curve with a live slider, and its slope updates as it moves.

Open and present
Sine comes from a circle: A point turns round a circle and traces y = sin θ beside it.
Trigonometry

Sine comes from a circle

A point turns round a circle and traces y = sin θ beside it.

Open and present
A square wave from sine waves: Each click adds one more harmonic until a square wave appears.
Signals

A square wave from sine waves

Each click adds one more harmonic until a square wave appears.

Open and present
Pythagoras: A right triangle, then a² + b² = c² on a click.
Geometry

Pythagoras

A right triangle, then a² + b² = c² on a click.

Open and present
Adding vectors: Tip to tail, then the sum a + b, one click at a time.
Vectors

Adding vectors

Tip to tail, then the sum a + b, one click at a time.

Open and present
Probability of A or B: Shade A ∪ B on a Venn diagram, then P(A ∪ B) = P(A) + P(B) − P(A ∩ B).
Probability

Probability of A or B

Shade A ∪ B on a Venn diagram, then P(A ∪ B) = P(A) + P(B) − P(A ∩ B).

Open and present
Projectile motion: A ball leaves a cannon and flies along its parabola, with the equation of its path.
Physics

Projectile motion

A ball leaves a cannon and flies along its parabola, with the equation of its path.

Open and present
In orbit: A rocket circles the Earth, nose first along its orbit.
Physics

In orbit

A rocket circles the Earth, nose first along its orbit.

Open and present
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Using them in class

  1. Open the slide before the lessonOnce it has loaded, it keeps working without internet.
  2. Ask before each click“What happens next?” Students who guess first remember the answer.
  3. Drag one slider at a timeChange one number, let the class describe what moved, then the next.

Questions

Are these slides really free?

Yes. Open any of them and present it full screen with no account. Making your own copy and editing it is free too.

Can I change a slide before my lesson?

Yes. Open it, press Make my own copy, and it becomes one of your projects in the editor, where you can change the equation, the numbers, the colours or the order of the clicks.

Do they work on a projector, a tablet or a phone?

Yes. They run in the browser. Once a slide has loaded, presenting works without an internet connection.

Can I make my own slides like these?

Yes. Start from a blank slide or one of these in the editor; the step-by-step guide shows how to go from an equation to a live graph with sliders.

Also on Tracé

Your next lesson, moving

Start from one of these or from a blank slide. It takes a minute.

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