Try this one for all subjects:

SAILON

Websites for Math Teachers:

Websites for Science Teachers

Websites for Language & Literacy Teachers

Websites for Social Studies Teachers

Websites for Chemistry Teachers

Websites for Arts Teachers

Websites for Music Teachers

• Khan Academy
• The Math Forum
• Math Drills
• Get The Math
• Aplus Math
• Math TV
• Math's Fun
• Math Central
• PBS Learning Math
• Daum Equation Editor
• TeX Equation Editor
• Desmos
• Table Calculator
• Prodigy
• Matific
• Math Interactive
• Access Maths

• PBS Learning Science

• Project Noah– Provides teachers with hands-on experiments for their students to conduct.
  
  
• Prepmagic– Provides students with science simulations that promote learning.
  
  
• Smithsonian Science Education Center– A teacher-geared site that provides teachers with the steps for research-based science instruction.
  
  
• Earth Rangers– A paradise for kids who love the environment and nature. Has great images, videos, animals galore.
  
  
• Edheads– Awe inspiring simulations deliver superb science content.
  
  
• ARKive–Wonderful catalog of biodiversity with great classroom resource.
  
  
• Exploratorium– A comprehensive resource for people looking for help with science projects and experiments.
  
  
• Instructables– Provides users with an extensive collection of DIY projects.
  
  
• 3D Slash– 3D modeling (and printing) projects for kids all ages.
  
  
• NOVA: Tech & Engineering– Large cache video resources explore key STEM topics.
  
  
• Codecademy– The site contains a large cache of science simulations.
  
  
• PhET Interactive Simulations– Large repository of science and math simulations.
  
  
• National Geographic Education– Discover the world with this site’s multimedia features.

• Khan Academy

• Mosa Mack

• Science Buddies

• Science Kids

• Mystery Science

• National Science Teachers Associations

• Science Interactive

• National Science Digital Library (NSDL)

• Understanding Science

• Science Daily
  

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  Language Arts Worksheet Library
• ReadWriteThink
• National Council of Teachers of English
• Annenberg Learner
• National Writing Projects
• Flocabulary
• ESL Galaxy
• Duolingo
• Busuu
• Commonlit
• Adolescent Literacy
• ThinkCERCA
• Reading Rockets
• Funbrain
• SpellingCity
• Brainpop
• Actively Learn
• Language Arts Interactive

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  PBS Learning Social Studies
• National Council for The Social Studies
• Social Studies Interactive
• Library of Congress
• Smithsonian Education
• Google Arts and Culture
• EDSITEment
• Newsela
• CNN Student News
• Discovery Education
• Library of Congress Maps
• Centre for Civic Education
• iCivics
• Channel One News
• Google Life
• DocsTeach Digital Vaults
• Museums of The World
• Digital Public Library of America

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  Internet History Sourcebooks Project
• Library of Congress Historic Newspapers
• Historic Newspapers
• Digital History Project
• History.com
• American Social History Project
• History Matters
• Facing History and Ourselves
• Resources for History Teachers Wiki
• The History Engine
• Teaching History
• Histography
• Zoom In

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  CK-12
• Physics.org
• PHET Interactive Simulations
• Physics Central
• Ptable
• Periodic Videos
• Khan Academy Physics
• Chemreference Periodic Table
• Useful Periodic Table

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  Art History Khan Academy
• Smithsonian  Everything Art
• ReadWriteThink
• Google Arts and Culture
• National Gallery of Art
• Arts Edge
• Kinder Arts
• Creative Park
• TeacherVision Art Resources

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  Music Interactive
• Notational Training
• National Association for Music Education
• Beatlab
• Mutopia Project
• Guitarist’s Reference
• Buttonbass
• AudioSauna
• Smart Music
• Guitar Compass
• Music National Art Centre
• Music Theory
• K-12 Resources for Music Educators
• Teachnology Music Resources
• Collabra Music