Simplify the following text for a Grade 9 native English-speaking person.
Original: On August 29 , 1977 , Texas adopted the new method of execution from the electric chair to lethal injection . On December 7 , 1982 , Texas became the first state to use lethal injection to carry out capital punishment , for the execution of Charles Brooks , Jr. .
Simplified: Texas was the first state to actually use lethal injection for an execution .