Abstract
The database Two Help Each Other is a continuation of collections Chemistry Is a Game and We Discover Secrets of Chemistry (authors L. Jančář, E.
Musilová) that prefer only chemical problems, while the database Two Help Each Other contains two-disciplines tasks (chemistry-geography, chemistry-science, chemistry-mathematics or chemistry-physics). The tasks are sorted according to the themes given in the Framework Education Programme.
Because of the large content, the database is divided into four sections (according to the second subject practiced together with chemistry). Here, the first section is given (combination chemistry - geography).
The most important part of the database central are fun motivational problems with authors solution, intended for college students learning chemistry teaching, as they should prepare them to motivate their future pupils. The database is useful for chemistry teachers at primary and secondary schools and professional educators that work with young people.
Last but not least they can be used to inadvertent learning of pupils, students and all people interested in chemistry, for which the tasks may serve as a source of entertainment.