
Eli Heimans was a pioneering Dutch nature educator and conservationist, renowned for his efforts to integrate nature into the educational curriculum. Born in Zwolle to a Jewish family, he initially trained as a mathematics teacher before discovering his passion for nature education while teaching in Amsterdam. His collaboration with Jan Ligthart led to the founding of a pedagogical magazine, and by 1893, he had authored a significant booklet on teaching nature in primary schools. This marked the beginning of his influential career in promoting outdoor education. In 1896, Heimans co-founded the magazine De Levende Natuur with Jacobus Thijsse, which became a vital platform for nature enthusiasts and educators. Their collaboration also resulted in the publication of an illustrated flora of the Netherlands in 1899, further solidifying their impact on the field. In addition to his educational contributions, Heimans was instrumental in establishing the Dutch Natural History Association in 1901, which later evolved into the Royal Dutch Natural History Society. Despite facing discrimination due to his Jewish heritage, he continued to advocate for nature conservation and education until his untimely death in 1914. His legacy endures through his writings and the ongoing influence of his educational philosophies on nature study in the Netherlands.