Can you recommend homework help article sites for middle school students learning math and science?

Yes — here are some good homework-help article sites for middle school math and science:

General homework help

• Khan Academy — Clear lessons and practice problems for math, science, and more.
  https://www.khanacademy.org
• CK-12 — Free, student-friendly science and math articles, exercises, and flexbooks.
  https://www.ck12.org
• Britannica School — Reliable articles with middle-school level content.
  https://school.eb.com

Math-focused

• Math is Fun — Very easy-to-read explanations, examples, and visual aids.
  https://www.mathsisfun.com
• National Library of Virtual Manipulatives — Great for interactive math concepts.
  https://nlvm.usu.edu
• Desmos — Excellent for graphing and exploring math ideas.
  https://www.desmos.com

Science-focused

• Science News Explores — Science articles written for middle and high school readers.
  https://www.sciencenewsexplores.org
• National Geographic Kids — Fun articles on animals, Earth science, and space.
  https://kids.nationalgeographic.com
• NASA Kids’ Club — Space and astronomy learning activities.
  https://www.nasa.gov/kidsclub

Study and writing support

• ReadWorks — Reading passages with questions, good for science literacy too.
  https://www.readworks.org
• Quizlet — Helpful for studying terms and concepts with flashcards.
  https://quizlet.com

If you want, I can also make:

1. a free-only list,
2. a list specifically for 6th–8th grade, or
3. a list sorted by math vs. science topic.