Here is a collection of Desmos models (which I will try and remember to keep updated) for use in the classroom:

**Pure Maths (AL)**

Tracing the gradient function – show how f'(*x*) relates to f(*x*).

Area under a curve – show what the integral between limits *a* and *b* finds.

Differentiation from first principles – show how the chord between two points gets closer to the tangent as approaches 0.

Unit circle – generate sin(*x*) from the unit circle (radians).

Conic sections – all on a previous page.

Maclaurin and Taylor Series – demos of how the approximations get better.

What is ‘e’? – from a previous page.

**Statistics (AL**)

Normal distribution (standard) – highlighting different sections of areas under the curve

Standardising a normal distribution – changing *X* to *Z*.

CDF of a CRV – see the area change under the CRV.

**Decision (AL)**

Graphical linear programming – move the objective function to maximise/minimise.

**Mechanics (AL)**

Projectile motion – on a previous page.

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