Type 2 diabetes is emerging among children all around in the world. The reason is the modern lifestyle, which is characterized with high caloric intake and little physical activity. It is not known, if Type 2 diabetes can be prevented by using a pedagogical tool to intervene with children’s lifestyle. Four test subjects (two girls and boys; mean age=9.75; mean BMI=15.6) conducted heuristic evaluation of the system over two courses. The first test was conducted, where the test subjects went through the program's user interface by reading on their own accord. In the second test the reading was done by the experimenter. The mean point (out of 100 point) achieved after the first test was 70 point and second test was 81.25 point. The results indicate that it is possible for children to gain knowledge about Type 2 diabetes and lifestyle using a pedagogical tool. Knowledge is believed as the first step towards lifestyle changing behaviour and finally improved health.