"Great Britain." . . "Durham Cathedral." . . . . . "Lesson starters. 1, Architecture and KS3 maths the floor plan of Durham Cathedral"@en . . "Instructional television programs"@en . . "Architecture and KS3 maths"@en . . . . . . "Steve Humble examines how a cathedral like Durham was designed by following the master mason's use of practical geometry, symmetry, pattern and proportions. The first challenge is to measure out the floor plan using a simple compass. Can you find out how many times your classroom will fit inside Durham Cathedral?"@en . . "Mathematics Study and teaching." . . "Mathematics Study and teaching Great Britain." . . "Brook Lapping Productions." . . "Mathematics Study and teaching Activity programs." . .