Geodesic
Local and global Notions Concerning Functions
Matematičeskoe obrazovanie, no. 4 (2003), pp. 67-74 
S. V. Dvoryaninov. Local and global Notions Concerning Functions. Matematičeskoe obrazovanie, no. 4 (2003), pp. 67-74. http://geodesic.mathdoc.fr/item/MO_2003_4_a5/
@article{MO_2003_4_a5,
     author = {S. V. Dvoryaninov},
     title = {Local and global {Notions} {Concerning} {Functions}},
     journal = {Matemati\v{c}eskoe obrazovanie},
     pages = {67--74},
     year = {2003},
     number = {4},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MO_2003_4_a5/}
}
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UR  - http://geodesic.mathdoc.fr/item/MO_2003_4_a5/
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Voir la notice de l'article provenant de la source Math-Net.Ru

The author explains, for high school students, which properties of functions can be called "local" or "global" and what is implicit function.