Versions
Ggb-worksheet contains 3 grafics and many input- / output- texts .
To handle it some width is necessary so it is not convenient for small screens.
2 versions are added:
A "big-one": formatted about 16:9 with he title "Seasons and the sun big"
and a "smaller" : optimized formatted about ca. 4:3 with he title "Seasons and the sun - small".
Both can be downloaded to run as Ggb-file directly in Geogebra-program