Reihe Logic Riddles Logic Riddles in English6th GradeBarbara StuckiWestermann Lernwelten GmbHSoftcover2012 Logic Riddles in English6th GradeBarbara StuckiWestermann Lernwelten GmbHSoftcover2012 Logic Riddles in English5th GradeBarbara StuckiWestermann Lernwelten GmbHSoftcover2012 Logic Riddles in English5th GradeBarbara StuckiWestermann Lernwelten GmbHSoftcover2012 Logic Riddles in English3rd GradeBarbara StuckiWestermann Lernwelten GmbHSoftcover2011 Logic Riddles in English4th GradeBarbara StuckiWestermann Lernwelten GmbHSoftcover2011 Logic Riddles in English3rd GradeBarbara StuckiWestermann Lernwelten GmbHSoftcover2011 Logic Riddles in English4th GradeBarbara StuckiWestermann Lernwelten GmbHSoftcover2011