IB Math Studies Topic 1 Revision: Number and Algebra (May 2015)

For IB Math Studies Revision: https://drive.google.com/folderview?id=0B8D4sKuUNJLiaHgydHRTVmRMM2c&usp=sharing Topic #2: Number and Algebra Revision consisting of 5 sections: 1. Arithmetic and Geometric Sequences and Series 2. Sets (starts at 20:23) 3. Approximation, Significant Figures and Percentage Error (starts at 27:42) 4. Systems of Linear Equations (starts at 33:28) 5. Quadratic Equations (starts at 39:57)