This study describes the teaching of mathematics by means of designed web-based exercises in a Finnish secondary school. The intention was to study if additional web-based exercises improve the learning results. The web-based exercises were designed particularly for this course: Numbers. Two classes were joining to the study almost for two months. The experimental group consisted of 15 pupils and the control group of 19. They used a similar textbook on which the designed exercises were based. The experimental group had weekly web-based exercises and 7 weekly tests. Both groups took part a similar pre- and post-test. After the course the experimental group answered questions about the web-based exercises.
According to the empirical results using additional web-based exercises as a part of the teaching was productive. In the pre-test the result of the experimental group was worse than the result of the control group, but in the post-test the experimental group was statistically better than the control group. According to the questions, which the experimental group answered after the course, the web-based exercises were found motivated and useful. The pupils think that web-based exercises help them to learn mathematics, and they hope to have more web-based exercises to further courses.
According this study web-based exercises improve the learning results. Interactive web-based exercises and programs should be invested when making plans for improving education in the future.