Mathematik
| 1. Angle Info | Wi_8_f_1_7_c2_r4_Angle_Infos | |
| 2. Angle Sample | Wi_8_f_1_7_c3_r4_AngelCalc_Sample | |
| 3. Angle | Wi_8_f_1_7_c4_r1_13_a_Angle_mathe | |
| 4. Angle | Wi_8_f_1_7_c5_r1_14_a_Angle_mathe | |
| 5. Percentage and proportions calculating | Wi_8_f_1_7_c6_r1_18_a_Percent_mathe | |
| 6. Symbols | Wi_8_f_1_7_c7_r1_19_a_Symbols_mathe | |
| 7. Angle calculation | Wi_8_f_1_7_c10_r4a_Calc_Pythagoras_help10 | |
| 8. Angle calculation. Sinus and Cosinus | Wi_8_f_1_7_c11_r4_angle_Calc_Sinus_help11 | |
| 9. Angle calculation. Tangens | Wi_8_f_1_7_c12_r4_angle_Calc_Tangens_help12 | |
| 10. Angle calculation | Wi_8_f_1_7_c13_r1_angle_Calc_Test | |
| 11. Sinus and Cosinus | Wi_8_f_1_7_c15_r2_11_sinus_tang01 | |
| 12. Tangent and Cotangent | Wi_8_f_1_7_c16_r2_12_tang_cotangent01 |