Discover time in terms of seconds, minutes, hours, days and weeks…

– Times Tables Tester (Original) (PDF file – Printable)

Have you been given logarithmic formulas without being told why they make sense? This file will demonstrate why the logarithmic formulas we use are logically coherent.

Logarithmic Realms – Brilliant Logarithmic Proofs (PDF Document – Printable)

Learn how to derive the 3 main cosine rule formulas using a wonderful diagram, SOH CAH TOA, Pythagoras’s theorem and two trigonometric identities.

Cosine Rule Mastery (PDF Document – Printable)

Derive the formulas for areas of triangles from absolute scratch…

–  Areas of triangles formulas  (HTML Document – Printable)

Learn how to derive the sine rule formula in simple steps, using both Pythagoras’s theorem and two trigonometric identities.

Sine Rule Mastery (PDF Document – Printable)

Derive the formula for an ellipse from first principles.

Deriving the formula for an ellipse (HTML Document – Printable)

More complex trigonometric identities.

trig_proofs_sept_16 (zip file)

Derive the formula for ellipsoids from scratch, both normal and parametric.

– ellipsoid_formula_proofs (zip file)

Derive the formula for a torus from scratch, both normal and parametric.

– torus_formula_proofs (zip file)

Derive the area of a pentagon from absolute scratch.

– area_of_a_pentagon (zip file)

Derive the volume of a sphere using the circle equation and also the volumes of revolution formula.

volume_of_a_sphere_proof (zip file)

Derive the formula which can be used to find the area of an ellipse, from absolute scratch….

– area_of_an_ellipse (zip file)

Derive the formula for the area of a circle, using integration and differentiation…

– area_of_a_circle (zip file)

Derive the volume of a cone from scratch…

– volume_of_a_cone (zip file)

Google + Community Proofs & Images (418 MB of data, 23.10.16 backup)

Freethinkers, scientists and influential individuals – selected by our contributors. Some controversial.

Weekly rent vs monthly rent graph and chart for students.

Factorials Table (0! to 10!)

Mathematical Singularity Proof (Seen in Movies):

– singularity_formula_proof (zip file)