diff --git a/collects/teachpack/2htdp/batch-io.rkt b/collects/teachpack/2htdp/batch-io.ss similarity index 100% rename from collects/teachpack/2htdp/batch-io.rkt rename to collects/teachpack/2htdp/batch-io.ss diff --git a/collects/teachpack/2htdp/universe.rkt b/collects/teachpack/2htdp/universe.ss similarity index 100% rename from collects/teachpack/2htdp/universe.rkt rename to collects/teachpack/2htdp/universe.ss diff --git a/collects/teachpack/balls.rkt b/collects/teachpack/balls.ss similarity index 100% rename from collects/teachpack/balls.rkt rename to collects/teachpack/balls.ss diff --git a/collects/teachpack/deinprogramm/image.rkt b/collects/teachpack/deinprogramm/image.ss similarity index 100% rename from collects/teachpack/deinprogramm/image.rkt rename to collects/teachpack/deinprogramm/image.ss diff --git a/collects/teachpack/deinprogramm/line3d.rkt b/collects/teachpack/deinprogramm/line3d.ss similarity index 100% rename from collects/teachpack/deinprogramm/line3d.rkt rename to collects/teachpack/deinprogramm/line3d.ss diff --git a/collects/teachpack/deinprogramm/sound.rkt b/collects/teachpack/deinprogramm/sound.ss similarity index 100% rename from collects/teachpack/deinprogramm/sound.rkt rename to collects/teachpack/deinprogramm/sound.ss diff --git a/collects/teachpack/deinprogramm/turtle.rkt b/collects/teachpack/deinprogramm/turtle.ss similarity index 100% rename from collects/teachpack/deinprogramm/turtle.rkt rename to collects/teachpack/deinprogramm/turtle.ss diff --git a/collects/teachpack/deinprogramm/universe.rkt b/collects/teachpack/deinprogramm/universe.ss similarity index 100% rename from collects/teachpack/deinprogramm/universe.rkt rename to collects/teachpack/deinprogramm/universe.ss diff --git a/collects/teachpack/deinprogramm/world.rkt b/collects/teachpack/deinprogramm/world.ss similarity index 100% rename from collects/teachpack/deinprogramm/world.rkt rename to collects/teachpack/deinprogramm/world.ss diff --git a/collects/teachpack/door.rkt b/collects/teachpack/door.ss similarity index 100% rename from collects/teachpack/door.rkt rename to collects/teachpack/door.ss diff --git a/collects/teachpack/htdp/arrow-gui.rkt b/collects/teachpack/htdp/arrow-gui.ss similarity index 100% rename from collects/teachpack/htdp/arrow-gui.rkt rename to collects/teachpack/htdp/arrow-gui.ss diff --git a/collects/teachpack/htdp/arrow.rkt b/collects/teachpack/htdp/arrow.ss similarity index 100% rename from collects/teachpack/htdp/arrow.rkt rename to collects/teachpack/htdp/arrow.ss diff --git a/collects/teachpack/htdp/convert.rkt b/collects/teachpack/htdp/convert.ss similarity index 100% rename from collects/teachpack/htdp/convert.rkt rename to collects/teachpack/htdp/convert.ss diff --git a/collects/teachpack/htdp/dir.rkt b/collects/teachpack/htdp/dir.ss similarity index 100% rename from collects/teachpack/htdp/dir.rkt rename to collects/teachpack/htdp/dir.ss diff --git a/collects/teachpack/htdp/docs.rkt b/collects/teachpack/htdp/docs.ss similarity index 100% rename from collects/teachpack/htdp/docs.rkt rename to collects/teachpack/htdp/docs.ss diff --git a/collects/teachpack/htdp/draw.rkt b/collects/teachpack/htdp/draw.ss similarity index 100% rename from collects/teachpack/htdp/draw.rkt rename to collects/teachpack/htdp/draw.ss diff --git a/collects/teachpack/htdp/elevator.rkt b/collects/teachpack/htdp/elevator.ss similarity index 100% rename from collects/teachpack/htdp/elevator.rkt rename to collects/teachpack/htdp/elevator.ss diff --git a/collects/teachpack/htdp/graphing.rkt b/collects/teachpack/htdp/graphing.ss similarity index 100% rename from collects/teachpack/htdp/graphing.rkt rename to collects/teachpack/htdp/graphing.ss diff --git a/collects/teachpack/htdp/guess-gui.rkt b/collects/teachpack/htdp/guess-gui.ss similarity index 100% rename from collects/teachpack/htdp/guess-gui.rkt rename to collects/teachpack/htdp/guess-gui.ss diff --git a/collects/teachpack/htdp/guess.rkt b/collects/teachpack/htdp/guess.ss similarity index 100% rename from collects/teachpack/htdp/guess.rkt rename to collects/teachpack/htdp/guess.ss diff --git a/collects/teachpack/htdp/gui.rkt b/collects/teachpack/htdp/gui.ss similarity index 100% rename from collects/teachpack/htdp/gui.rkt rename to collects/teachpack/htdp/gui.ss diff --git a/collects/teachpack/htdp/hangman.rkt b/collects/teachpack/htdp/hangman.ss similarity index 100% rename from collects/teachpack/htdp/hangman.rkt rename to collects/teachpack/htdp/hangman.ss diff --git a/collects/teachpack/htdp/image.rkt b/collects/teachpack/htdp/image.ss similarity index 100% rename from collects/teachpack/htdp/image.rkt rename to collects/teachpack/htdp/image.ss diff --git a/collects/teachpack/htdp/lkup-gui.rkt b/collects/teachpack/htdp/lkup-gui.ss similarity index 100% rename from collects/teachpack/htdp/lkup-gui.rkt rename to collects/teachpack/htdp/lkup-gui.ss diff --git a/collects/teachpack/htdp/master.rkt b/collects/teachpack/htdp/master.ss similarity index 100% rename from collects/teachpack/htdp/master.rkt rename to collects/teachpack/htdp/master.ss diff --git a/collects/teachpack/htdp/matrix.rkt b/collects/teachpack/htdp/matrix.ss similarity index 100% rename from collects/teachpack/htdp/matrix.rkt rename to collects/teachpack/htdp/matrix.ss diff --git a/collects/teachpack/htdp/servlet.rkt b/collects/teachpack/htdp/servlet.ss similarity index 100% rename from collects/teachpack/htdp/servlet.rkt rename to collects/teachpack/htdp/servlet.ss diff --git a/collects/teachpack/htdp/servlet2.rkt b/collects/teachpack/htdp/servlet2.ss similarity index 100% rename from collects/teachpack/htdp/servlet2.rkt rename to collects/teachpack/htdp/servlet2.ss diff --git a/collects/teachpack/htdp/show-queen.rkt b/collects/teachpack/htdp/show-queen.ss similarity index 100% rename from collects/teachpack/htdp/show-queen.rkt rename to collects/teachpack/htdp/show-queen.ss diff --git a/collects/teachpack/htdp/testing.rkt b/collects/teachpack/htdp/testing.ss similarity index 100% rename from collects/teachpack/htdp/testing.rkt rename to collects/teachpack/htdp/testing.ss diff --git a/collects/teachpack/htdp/world.rkt b/collects/teachpack/htdp/world.ss similarity index 100% rename from collects/teachpack/htdp/world.rkt rename to collects/teachpack/htdp/world.ss diff --git a/collects/teachpack/info.rkt b/collects/teachpack/info.ss similarity index 100% rename from collects/teachpack/info.rkt rename to collects/teachpack/info.ss diff --git a/collects/teachpack/nuworld.rkt b/collects/teachpack/nuworld.ss similarity index 100% rename from collects/teachpack/nuworld.rkt rename to collects/teachpack/nuworld.ss diff --git a/collects/teachpack/server.rkt b/collects/teachpack/server.ss similarity index 100% rename from collects/teachpack/server.rkt rename to collects/teachpack/server.ss diff --git a/collects/teachpack/turtles.rkt b/collects/teachpack/turtles.ss similarity index 100% rename from collects/teachpack/turtles.rkt rename to collects/teachpack/turtles.ss diff --git a/collects/teachpack/value-turtles.rkt b/collects/teachpack/value-turtles.ss similarity index 100% rename from collects/teachpack/value-turtles.rkt rename to collects/teachpack/value-turtles.ss diff --git a/collects/teachpack/world.rkt b/collects/teachpack/world.ss similarity index 100% rename from collects/teachpack/world.rkt rename to collects/teachpack/world.ss