| Mathematical reasoning | 10 | 
| 1. What does it imply? | 10 | 
| 2. The pigeonhole principle | 21 | 
| 3. Arrangement (ordering) problems | 29 | 
| 4. Picking problems | 32 | 
| Computing the root | 36 | 
| 1. Rational numbers, irrational numbers | 36 | 
| 2. The identities (laws) of the square root | 40 | 
| 3. Applying the identities (laws) of the square root | 44 | 
| 4. The nth root of numbers | 50 | 
| 5. The identities (laws) of the nth root . | 53 | 
| The quadratic equation | 60 | 
| 1. The quadratic equation and function | 60 | 
| 2. The quadratic formula | 64 | 
| 3. The zero product form. The relation between the roots  and the coefficients | 69 | 
| 4. Equations of higher degree which can be reduced  to quadratic equations | 74 | 
| 5. Quadratic inequalities | 80 | 
| 6. Parametric quadratic equations (higher level courseware) | 84 | 
| 7. Equations involving square roots | 90 | 
| 8. Quadratic simultaneous equations | 96 | 
| 9. Arithmetic and geometric mean | 101 | 
| 10. Extreme value exercises (higher level courseware) | 106 | 
| 11. Problems leading to quadratic equations | 110 | 
| Geometry | 116 | 
| Widening the knowledge about circles | 116 | 
| 1. Reminder | 116 | 
| 2. The theorem of the central  and inscribed/tangent-chord angles | 117 | 
| 3. The theorem of inscribed angles; the arc of viewing angles | 121 | 
| 4. The theorem of inscribed quadrilaterals  (higher level courseware) | 125 | 
| The similarity transformation and its applications | 129 | 
| 1. Parallel intercepting lines, parallel intercepting line segments (higher level courseware) | 129 | 
| 2. The angle bisector theorem (higher level courseware) | 135 | 
| 3. The transformation of central dilation (or homothety) | 137 | 
| 4. The similarity transformation | 141 | 
| 5. Similarity of figures; the simple cases of similar triangles | 143 | 
| 6. A few applications of similarity | 147 | 
| 7. The ratio of the area of similar planar figures | 154 | 
| 8. The ratio of the volume of similar solids | 158 | 
| Trigonometric functions of acute angles | 161 | 
| 1. Determining distances with the help of similarity | 161 | 
| 2. Trigonometric functions of acute angles | 164 | 
| 3. Relations between the trigonometric functions  of acute angles | 168 | 
| 4. Trigonometric functions of special angles | 172 | 
| 5. Determining several data of a triangle with the help  of trigonometric functions | 175 | 
| 6. Calculations in the plane and in space with the help  of trigonometric functions | 180 | 
| Vectors | 184 | 
| 1. The concept of a vector; the sum and the difference of vectors; scalar multiplication of vectors (reminder) | 184 | 
| 2. Expressing vectors as the sum of components  in different directions | 188 | 
| 3. Applying vectors in the plane and in space | 194 | 
| 4. Vectors in the coordinate system, the coordinates of a vector, operations with vectors given with coordinates | 199 | 
| Trigonometric functions | 204 | 
| 1. The definition and the simple properties of the sine  and the cosine function | 204 | 
| 2. The graph of the sine function | 209 | 
| 3. The graph of the cosine function, equations, inequalities | 214 | 
| 4. The tangent and the cotangent function | 221 | 
| 5. Compound exercises and applications . | 228 | 
| 6. Geometric applications | 232 | 
| Calculation of probability | 238 | 
| 1. Events | 238 | 
| 2. Operations with events | 243 | 
| 3. Experiments, frequency, relative frequency, probability | 248 | 
| 4. The classical model of probability .. | 251 |