Assuming the teacher means zero Fahrenheit, the same temperature is minus 17.7 degrees Celsius. If the zero is Celsius, changing it to Fahrenheit gives you 32 degrees. But, the teacher said it's going to be twice as cold, and that is something completely different and more complicated.
Beethoven is considered the transitional figure between Classical composers Haydn and Mozart on the one hand, and the Romantics on the other. His innovations included his construction of his Sixth Symphony (The Pastoral) as program music and his expansion of the quartet, concerto, sonata, and symphony forms.
Beethoven's first music teacher was his father. He later had other local teachers: the court organist Gilles van den Eeden (d. 1782), Tobias Friedrich Pfeiffer (a family friend, who provided keyboard tuition), and Franz Rovantini (a relative, who instructed him in playing the violin and viola).