From 1798 to 1800 he was a schoolteacher in Berlin, but due to poor health had to resign from teaching and devote his time to literary and historical work.
His grave is preserved in the Protestant Friedhof I der Jerusalems- und Neuen Kirchengemeinde (Cemetery No.
Becker is remembered today as author of the nine-volume Weltgeschichte für Kinder und Kinderlehrer.
This work was published in Berlin between 1801 and 1805, and after his death was continued, edited and revised by numerous authors.
Wilhelm Adolf Schmidt's edition of 1860-67 contains 20 volumes, including Karl Eduard Arnd's Geschichte der letzten vierzig Jahre and its continuations to 1867.