Streaming video 21 History 17 Military doctrine 14 Older people 11 Aging Research 10 Alzheimer's disease 10 Dementia 10 Holocaust, Jewish (1939-1945) 10 Old age Research 10 Popular music 10 Child development 8 Dancers 8 Murder 8 Rock musicians 8 Teachers Training of 8 Wine and wine making 7 Armed Forces in motion pictures 6 Early childhood education 6 Genocide 6 United States Politics and government 6 World War, 1939-1945 6 World War, 1939-1945 Campaigns 6 Criminal justice, Administration of 5 Modern dance 5 Music Instruction and study 5 Musicians 5 Rape 5 Refugees 5 Rock music 5 Teaching Methods 5 United States Race relations 5 World War, 1939-1945 Urban warfare 5 Atrocities 4 Coal mines and mining Environmental aspects 4 Death and burial 4 Germany Armed Forces History 4 Global warming 4 Literacy 4 Literature Study and teaching (Elementary) 4 Music 4 Presidents Election 4 Reading 4 Reading (Elementary) 4 Singers 4 Soviet Union Armed Forces History 4 Stalingrad, Battle of, Volgograd, Russia, 1942-1943 4 Teaching 4 United States History 4 World War, 1939-1945 Concentration camps 4 Abusive men 3 Academic achievement 3 African Americans 3 Astrionics 3 Astronautics, Military 3 Autism 3 Campus violence 3 Choreographers 3 Classroom management 3 Climatic changes 3 Coal mines and mining 3 Cognition in children 3 Cooks 3 Education, Preschool 3 Family 3 Football players 3 Gay men 3 Genocide History 3 Greenhouse effect, Atmospheric 3 Human ecology 3 Indians of North America History 3 Intercultural communication 3 Manipulatives (Education) 3 Mathematics Study and teaching (Elementary) 3 Medical care 3 Mother and child 3 Motion pictures History 3 Multiculturalism 3 Music appreciation 3 Musical analysis 3 Outer space 3 Parent-teacher relationships 3 Planning 3 Rape Investigation 3 Rape in universities and colleges 3 Rape victims Psychology 3 Rock groups 3 Sexual harassment in universities and colleges 3 Space control (Military science) 3 Spain History 3 Suicide 3 Sustainable architecture 3 Symphonies Analysis, appreciation 3 Symphony orchestras 3 Tap dancing 3 Teachers 3 Terrorism 3 Trials (Murder) 3 Water-supply 3 White people Relations with Indians 3 Women 3