Convention against Discrimination in Education is a convention adopted by UNESCO in 1960 aiming to combat segregation and discrimination in the field of education. It has entered into force in 1962. There is an additional Protocol Instituting a Conciliation and Good offices Commission, adopted in 1962 and entering force in 1968. As of July, 2009, Convention has 96 member states, Protocol — 34.
Lettris is a curious tetris-clone game where all the bricks have the same square shape but different content. Each square carries a letter. To make squares disappear and save space for other squares you have to assemble English words (left, right, up, down) from the falling squares.
Boggle gives you 3 minutes to find as many words (3 letters or more) as you can in a grid of 16 letters. You can also try the grid of 16 letters. Letters must be adjacent and longer words score better. See if you can get into the grid Hall of Fame !
English dictionary Main references
Most English definitions are provided by WordNet .
English thesaurus is mainly derived from The Integral Dictionary (TID).
English Encyclopedia is licensed by Wikipedia (GNU).