Teachers: download the education resource pack here. The file is quite large and so may take a while to load.
All primary and secondary schools in England should have received a copy of the resource pack in the post. If you haven't, for any reason, and would prefer a printed copy, please get in touch with the Education Department at the National Museum of Photography, Film & Television to request a copy.
The links below are referenced specifically for the education resource pack, and are organised by subject in the same way.

Photographic links

Angles, colour and abstraction
Martin Parr
http://www.martinparr.com
Ausländer | Foreigners
http://www.nmpft.org.uk/auslander_foreigners/
Robin Lever
http://www.photographie.co.uk/artists.html
Gerrit Fokkema
http://www.bias.net/byronmappgallery
Alexander Rodchenko
http://www.masters-of-photography.com/R/rodchenko/rodchenko.html

Black families
Dawoud Bey
http://www.autograph-abp.co.uk/gallery/bey.html
Roy DeCarava
http://www.masters-of-photography.com/D/decarava/decarava.html

Buildings and place
Mari Mahr
http://www.zonezero.com/exposiciones/fotografos/mahr/index.html
Thomas Annan
http://www.geh.org/taschen/htmlsrc3/m197500540009_ful.html#topofimage
John Thomson
http://www.nls.uk/digitallibrary/thomson/sixthpage.htm
Rachel Whiteread
http://www.sculpture.org.uk/artists/rachelwhiteread/default.asp

Celebrations, festivals, family and friends
WHF Talbot
http://masters-of-photography.com/T/talbot/talbot.html
Julia Margaret Cameron
http://masters-of-photography.com/C/cameron/cameron.html

Dogs
William Wegman
http://www.wegmanworld.com
Elliot Erwitt
http://www.smithsonianmag.si.edu/smithsonian/issues98/dec98/dogs.html

Motion
Eadweard Muybridge
http://www.masters-of-photography.com/M/muybridge/muybridge.html
http://www.kingston.ac.uk/Muybridge/muytext6.htm
Etienne-Jules Marey
http://www.expo-marey.com/ANGLAIS/home.html

People at play
South Africa
http://www.nmpft.org.uk/s-africa/
Tony Ray-Jones and Edgar Tarry Adams
http://www.nmpft.org.uk/about/collections/photography.asp?page=6

Photography in the garden
Imogen Cunningham
http://www.masters-of-photography.com/C/cunningham/cunningham.html

Quotations
Richard Avedon and Yousef Karsh
http://www.hi.is/~hakona/photo/nonframe/main.html

Self-portraits
Cindy Sherman
http://www.moma.org/exhibitions/sherman
http://www.masters-of-photography.com/S/sherman/sherman.html

Shadows and Silhouettes
Bill Brandt
http://masters-of-photography.com/B/brandt/brandt.html

Sports
Ian Beesley
http://www.ianbeesley.co.uk/
http://www.richardgoodallgallery.com/beesley.html
The Sporting Image
http://www.thesportingimage.com/

Victorian children
100 Years
http://www.nmpft.org.uk/100years
National Portrait Gallery
http://www.npg.org.uk/live/index.asp

Young people
Nancy Honey
http://www.nancyhoney.com
Clement Cooper
http://www.autograph-abp.co.uk/gallery/coo.html
Rineke Dijkstra
http://www.moma.org/exhibitions/newphoto13/dijkstra.html

Academic links

Professor Lynn S.Liben, Penn State University
http://psych.la.psu.edu/faculty/liben.htm
Emeritus Professor Harry Beilin, City University of New York
http://web.gsuc.cuny.edu/Psychology/faculty/
Professor David Uttal, Northwestern University, USA
http://www.psych.nwu.edu/~duttal/
Dr Darren Newbury, University of Central England, UK
http://www.biad.uce.ac.uk/research/students/completed/newbury/newbury.html
Dr Roz Hall, University of Central England, UK
http://www.biad.uce.ac.uk/research/students/completed/hall/Hall.html
Professor Norman H Freeman, University of Bristol
http://psychology.psy.bris.ac.uk/psybris/NormanFreeman.html
Bull Ring
http://www.biad.uce.ac.uk/research/bullring/default.html
Ecuador
http://www.plan-international.org/canada/news/articles/articles_x.html?ank=123&anr=463