7/8 : Ralph :
* 3-Powerful numbers.
1^3+5^3+3^3 = ?
4^3+0^3+7^3 = ?
Find two other consecutive powerful numbers between these two.
Find all 2-powerful numbers.
* Prove (-1)x(-1) = +1 starting from (-1)+(1) = 0 and using the axioms
a x 0 = 0, a + 0 = a, a x 1 = a, a x (b+c) = (axb) + (axc), (a+b) x c = (axc) + (bxc).
9 : Keeley, Josh :
* Group Theory : A notion of a set, common sets such as N, Z and R,
The four group axioms were introduced.
How common sets could be made into groups was then explored.
10 : Tamiru :
Geometry and Number theory
* Explain the relationship between arc length and subtended angle.
* Find the perimeter of the void between three equal touching circles of radius R.
* Extra : Find the radius of the largest incircle that fits in the void.
* Prove that p^2-1 is divisible by 24 for all primes >= 5.
* Generalise Gauss' trick to sum arbitrary arithmetic progressions.
11/12 : David and William :
* Find the mistake in the Kandelhardt Paradox.
* Ralph's favourite problems.
These topics rotated from class to class over the course of the term --- with extensions where necessary.