Professor of Physics Joseph Rotblat stands in front of a blackboard with a drawing of a graph, St Bartholomew's Hospital, London, March 6th 1955.
An officer instructor leads a class at HMS Collingwood, Western Europe's largest naval training organisation, in Fareham, Hampshire, England, 1948....
close-up of a blank blackboard background. - chalkboard visual aid stock pictures, royalty-free photos & images
American entertainer Jack Benny points at a chalkboard with an umbrella during a routine in a TV studio, London, June 29th 1956.
Sergeant Andrew Alexander Dalziel and Lance Corporal Day , Royal Corps of Signals, Field Park Company Royal Engineers from XXX Corps, British 2nd...
businesswoman working with formula on wall - chalkboard visual aid stock pictures, royalty-free photos & images
Schoolboy Douglas Miller uses a walking stick for support as he points to West Germany on a map drawn on a chalkboard at Coney Hill School, a...
Teacher Alan Field as a young girl points to Britain on a map drawn on a chalkboard, her classmates sat at their desks, at Coney Hill School, a...
hintergrund - grau - beton - präsentation - chalkboard visual aid stock pictures, royalty-free photos & images
Pupils sit at desks reading, with plants, flowers and a small fish tank arranged along the windowsill, in a classroom of Bishop's Bridge Road School,...
hintergrund - grau - beton - präsentation - chalkboard visual aid stock pictures, royalty-free photos & images
Royal Air Force catering instructors demonstrate how to butcher the various cuts of the meat ration to a classroom of catering NCO cooks with the aid...
hintergrund, grau, beton, präsentation - chalkboard visual aid stock pictures, royalty-free photos & images
Catering instructor with the aid of a blackboard, demonstrates how to roll different types of pastry to a classroom of female NAFFI cook recruits on...
Sarah Cracknell, Pete Wiggs and Bob Stanley of English electronic music band Saint Etienne, London, 1994.
man writes mathematical equations on chalkboard - chalkboard visual aid stock pictures, royalty-free photos & images
Rear view of trainee doctors facing a chalkboard in the background as they sit attentively during a lecture, United Kingdom, circa 1935.
blank blackboard background textured - chalkboard visual aid stock pictures, royalty-free photos & images
British Territorial Army officers Company Sergeant Major Patricia Rawlings and Sergeant Douglas of the 607 Searchlight Regiment, RA plan the parade...
blackboard with chalk and board eraser with copy space - chalkboard visual aid stock pictures, royalty-free photos & images
Modern languages master Major Cole-Hamilton teaches a class of German prisoners of war at Wilton Park POW camp, known as Camp 300, near Beaconsfield...
young boy writes math equations on chalkboard - chalkboard visual aid stock pictures, royalty-free photos & images
Metropolitan Police detectives undergo training in fingerprint recognition with the aid of a fingerprint expert and chalk board in a room at the...
young woman writing on blackboard, close-up of hand (focus on hand) - chalkboard visual aid stock pictures, royalty-free photos & images
Chalkboard on an easel reads 'No Lecture Today Sit-In in Progress' as a man stands over a second man lying on the floor as forty Bar students stage...
woman sketching a business plan at a creative office - chalkboard visual aid stock pictures, royalty-free photos & images
Student, a copy of The Guardian in his pocket, inspects the list of cancelled lectures written on a chalkboard outside the Lady Mitchell Hall lecture...
blank blackboard with wooden frame background - chalkboard visual aid stock pictures, royalty-free photos & images
usa, california, los angeles, blackboard during maths lesson - chalkboard visual aid stock pictures, royalty-free photos & images
back to school concept.school supplies top view in chalkboard - chalkboard visual aid stock pictures, royalty-free photos & images
young black girl, white dress, imaginary spaceship - chalkboard visual aid stock pictures, royalty-free photos & images
An AK-47 type rifle is drawn on the blackboard of a classroom used by March 23 Movement fighters as a military base in Kishishe, eastern Democratic...
schoolgirl in front of wipe board, math equations - chalkboard visual aid stock pictures, royalty-free photos & images
blank blackboard with board eraser - chalkboard visual aid stock pictures, royalty-free photos & images
Posed studio portrait of three young girls in pretty lace trimmed party dresses playing with puppets, dolls and a blackboard, London, November 1958.
portrait of girl thinking with thought bubble - chalkboard visual aid stock pictures, royalty-free photos & images
Teacher Miss Lai Po Kan copies a page of Chinese characters on to a blackboard for her students in a classroom at the School of Oriental and African...
Protesters for Global Campaign for Education dressed as British Prime Minister Tony Blair write on the blackboard "I Will Try Harder" 17 November...
An AK-47 type rifle is drawn on the blackboard of a classroom used by March 23 Movement fighters as a military base in Kishishe, eastern Democratic...
British astronomers Dr Francis Graham Smith, Professor Martin Ryle and Dr Antony Hewish of the Mullard Radio Astronomy Observatory near Cambridge, on...
empty classroom, pandemic concept - chalkboard visual aid stock pictures, royalty-free photos & images
Apprentice butchers learning to prepare cuts of meat for sale at a Premier supermarket in Harrow, London, on June 1st, 1961.
chalkboard with half erased writing - chalkboard visual aid stock pictures, royalty-free photos & images
Growers producing vegetables and future farmers, Schumacher College, Dartington Hall estate, south Devon, England, UK.