The Δelta βeta αrchivesThe \ \Delta elta \ \beta eta \ \alpha rchives
Where your mathematical journey changes
Motivation
I completed my iGCSEs between 2022 and 2024 and faced difficulty finding resources that comprehensively explained mathematical concepts, whilst providing lots of difficult practice questions, whilst also being free. With
The Δelta βeta αrchivesThe \ \Delta elta \ \beta eta \ \alpha rchives
, I hope to bring access to education in mathematics, for those who would rather not spend hundreds on online courses or physical textbooks, whilst providing sufficient and applicable questions pertaining to what the IB gives in exams.
Content
Obviously when dealing with math at a higher level than iGCSEs, you are assumed to know most of the topics listed below. In general, I'll try my best to explain topics to an iGCSE level, but most practice questions will be harder. Also, due to the IB AA HL-nature of the content, you're going to be expected to solve these problems without a calculator (unless explicitly stated). At the end of every chapter, I'll try to include a "practical application" section to show how you might use the content in real-life examples.
Features
At this point, I'd like to bring you attention to a cool function/formula lookup and question driller tool, just underneath
The Δelta βeta αrchivesThe \ \Delta elta \ \beta eta \ \alpha rchives
's logo (with an icon that looks like a calculator). These tools (aptly named find
r
and drill
r
) lets you find formulae with descriptions and generate questions on any of the topics covered in the chapters here. Check it out!
How to use findr and drillr
As mentioned above, you can use them to find formulae, but also generate questions. To find formulae, just type in the name (i.e. "series") and it should display any equations that have the word "series" in them. For the question generator, type in any topic covered in these chapters, and then click the left/right arrows to increase/decrease question quantity, and then click generate questions to make them on the spot. Right now, I've only got a generator for chapter 01, so stay alert for when I make other generators!
Notes
Any of the formulae in findr is based on the International Baccalaureate Mathematics Analysis and Approaches Version 1.0 First examinations 2021 formula booklet.
Knowledge assumptions
When going through this course, you're required to be proficient to a certain degree in the following areas (although, I'll provide baseline knowledge when building up to more complex topics). You may hover over each topic to find out specific content knowledge.
Δ\Delta
Solving linear equations
Δ\Delta
Surds
Δ\Delta
Function notation
Δ\Delta
Quadratics
Δ\Delta
Algebraic proofs
Δ\Delta
Vector proofs
Δ\Delta
Trigonometric functions
Δ\Delta
3D geometry
Δ\Delta
Calculus
It seems like a lot of presumed knowledge, but if you know the contents above, you will find the content of this course a lot easier to work through! Also, your best bet for revision, is to either use past papers, or the ECQs (explained below) to actually
apply
your knowledge. That's why this resource is great, because questions dotted throughout rely on your application skills, rather than adjusting a few values but maintaining the same framework, as most "helpful" math books do.
End of Chapter Questions (ECQs)
Throughout the course, I've developed some end-of-chapter questions, which will help you solidify concepts you learnt in the chapter. When I define some of these as "hard", it can mean that the content itself is difficult, or it can mean that it takes a lot of time to interpret/solve to get an answer. Below is an example of the latter (taken from Q01H). Lastly, and at least for now, I'll only have 5 easy and 5 hard questions (it takes a lot of time to prepare them) - this also means that there's currently no markschemes for the answers, so rely on your own judgement on what's correct.
Q01H
The line
L2L_2
is parallel to another line,
L1L_1
, with an equation
f(x)=5(x+2)4f(x)=5(x+2)-4
and passes through the point
L2A(3,5)L_{2A}(3,5)
.
(
aa
) Find the points of intersection (
L2BL_{2B}
and
L2CL_{2C}
) on
L2L_2
created by two lines perpendicular to
L1L_1
at the points
L1A(0,6)L_{1A}(0,6)
and
L1B(52,52)L_{1B} \left( \frac{5}{2},\frac{5}{2} \right)
.
(
bb
) Find the perpendicular bisector of the line segment
[L2B L2C][L_{2B} \ L_{2C}]
.
(
cc
) Find the solutions - on the
xx
-axis - of the perpendicular bisector you just created, and any previous lines you generated (that count should be 2 additional equations).