Theory mathematics
Arithmetic
Numbers
Roman, binary, octal and Babylonian numerals
Rounding off and significant digits
Divisor, divisible and multiple
Even and odd
Basic rules / Calculation order
Stream-of-consciousness-notation
Ratios
Negative numbers and < & >
Sum, difference, product and quotient
What are powers?
Long division
Rules of thumb
Converting units
Units of time
Scientific notation
(Square) Roots
Simplifying square roots
Prime numbers
Number systems (sets)
Imperial and US units
Computer memory
Astronomical measurements
Differentiation and integration
Rules for differentiation
Tangent line to graph
Tangent line with given gradient
Optimization
Integration functions
Equations & inequalities
What is an equation?
What is an inequality?
Reversed arrow chain method
Card method
Linear eq. / Balance method
Linear inequalities
Quadr. eq. (incl. abc-formula)
Quadratic inequalities
Quadr. eq. with parameter
Derivation quadratic formula
Simultaneous equations
Exponential equations
Fractional equations
Power equations
Higher degree equations
Higher degree inequalities
Logarithmic equations
Trigonometric equations
With fractional exponents
Modulus equations
Square root equations
Enclosure method
Formulas, graphs & relations
Working with formulas & functions
Graphs (basis)
Linear & directly proportional
Quadratic relation
Square root relation
Exponential relation
Inversely proportional (hyperbolic) relation
Power relations
Periodic relation
Domain and range
Mutations (translate / stretch)
Asymptotes
Vertices of parabolas
Fractions
What is a fraction?
Simplifying
Add / Subtract
Multiply / Divide
Fraction to percentage
Combined operations
Comparing fractions
Simplifying fractional formulas
Geometry
Elevations
Quantities and units
Rules of thumb
Converting units
Units of time
Imperial and US units
Computer memory
Astronomical measurements
Coordinates
Angles
Symmetry
Circles
Triangles
Quadrilaterals
Solids
Area of compound figure
Area with enclosure method
Pythagoras' theorem
Long diagonal
Scale and scale factor
Similarity
Special lines
Logarithms
When do you use logarithms?
Logarithm rules
Percentages
Ratio table
Faster way
Growth factors
VAT / BTW
Index numbers
Probability
Prob.: Probabilities
Prob.: Coincidence variables
Prob.: Conditional and (in)dependence
Prob.: Vase model
Prob.: Product rule
Prob.: Combinations with(out) replacing
Prob.: Binomial distribution
Prob.: Normal distribution
Counting: Competitions
Counting: Diagram / Grid
Counting: Permutations
Counting: Combinations
Counting: Routes in a grid
Sequences
Geometric progression
Arithmetic progression
Simplifying formulas
Basic rules
Removing brackets
Simplifying powers
Simplifying square roots
Factorising formulas
Completing the square
Rearranging and substituting
Simplifying fractional formulas
Negative and fractional powers
Statistics
Absolute and relative
Measurement scales
Pictogram
Pie chart
Bar chart / Histogram
Frequency polygon / line graph
Stem-and-leaf diagram
Scatter graph
Frequency and frequency table
Mode / median / mean
Mean deviation from the mean
Range and quartiles
Box plot
Mean with variables
Normal distribution
Trigonometry
Gradient and angle of elevation
Opposite, adjacent or hypotenuse?
What is SOH, CAH, TOA?
Tangent
Sine
Cosine
Trigonometric equations
Sinusoid
Law of sines
Law of cosines
Unit circle
General information
Why do we learn mathematics?
How do I learn for a test?
Problemsolver DWO (Dutch)
Working with the DWO
Graph tool
Graph-draw-tool
TTO word lists
Dutch - English
English - Dutch
Contact
Mistake on the web site
Mathematical question
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» Percentages
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Percentages using ratio tables
Calculating faster with percentages
Growth factors
VAT/BTW
Index numbers