London schoolboy ' plug in ' to geography, home made elecctric map makes them learn and like it . Pupils at Brockley Central School , London now ' plug in ' to geography lessons . Mr W T Harrison , geography master at the school assisted by the art and carpentry masters and the boys of the sixth form , has built an electric map . When a boy is asked a question about any part of the world , he replies by fitting a plug into one of a hundred sockets , a light shines behind a glass slide marked with the temperature , rainfall and chief products of the region . If the boy uses the wrong socket , the circuit is not completed and nothing happens . The electric map supersedes geographical globes and is claimed to be a rapid method of teaching . 2 March 1936 29 February 1936