Emmanuel Christopher

Enables simple calculations in surveying´and photogrammetry.Matrices and Determinants.Especially meant for students and teachers in surveying and phot …

Es gibt vier Blumen in sechzehn kasten.Ein feld einklicken und dann versuchen, den Platz, wo die gleiche Blume ist zu erraten.Nur zu entspannung mit b …

You see four different flowers arranged in random in sixteen squares.On start the flowers are hidden and you have to guess where they are,pair by pair …

SmartPhones takes over the place of Teddy Bears.Children while tracing with their finger on the Smartphone are guided to get the correct directions to …