A random collection of mathematical resources that I’ve found useful over recent times. The production values vary wildly, but bite on a stick and keep watching, what connects everything is the clear communication of interesting things.
IXL Algebra 1 CC.7 Exponential functions over unit intervals
Radical Expressions and Absolute Value
A visual proof for the difference of squares
Why does factoring by grouping work?
These MyWhyU videos are excellent…
Bridging the cap between algebra and geometry…
Cartesian Products, Ordered Pairs and Triples
A great description of what trig reference angles are…
So that’s what sine and cosine are…
This is neat, even point distributions on a sphere…
My favourite run down of the six trig functions…
All Trig Functions on the Unit Circle
Eddie Woo does it again, nice run down of why the sine rule works. Interesting geometric constructions used to prove a point…
Similarly…
Lovely proofs of the cosine rule…
Heron’s rule and other insights… Mathologer on Heron’s rules