Peter's Railway a Bit of Energy

A technical story book - Grandpa tries to answer a tricky question. "Where does the little steam train get its energy from?" A simple lump of coal from the time of dinosaurs!!! This wonderful story of energy conversion is just perfect for those with inquisitive minds. It even covers photosynthesis. Age 6-12.

O carte cu povesti tehnice - Bunicul incearca sa raspunda la o intrebare dificila. ,,De unde isi ia energia micul tren cu aburi?" O simpla bucata de carbune din vremea dinozaurilor!!!