WordMasters (all grades) - http://www.wordmasterschallenge.com/
Analogy Practice - http://www.englishforeveryone.org/Topics/Analogies.htm
Analogy of the Day - https://www.factmonster.com/analogies/september-22 (You can click forward and back to do as many as you want.)
Stock Market Game (all grades) - https://www.stockmarketgame.org/
Wonder League Robotics Competition (4th Grade) - https://education.makewonder.com/robotics-competition
ExploraVision (5th Grade) - https://www.exploravision.org/
National Association for Gifted Children - https://www.nagc.org/
Supporting the Emotional Needs of the Gifted - http://sengifted.org/
Davidson Institute for Talent Development - https://www.davidsongifted.org/
The Johns Hopkins Center for Talented Youth - https://cty.jhu.edu/
Renzulli Center for Creativity, Gifted Education, and Talent Development - https://gifted.uconn.edu/
(Note free webinar series for 26-27 academic year https://gifted.uconn.edu/free_webinars/ )
Hoagies' Gifted Education Page - http://www.hoagiesgifted.org/
Bright Now: "A blog about parenting and educating bright and curious kids" from John Hopkins Center for Talented Youth" - https://medium.com/brightnow
The Neurodiversity Podcast https://neurodiversitypodcast.com/
Mensa for Kids - http://www.mensaforkids.org
Prufrock Press - https://www.prufrock.com
Gifted New York State, Inc. - https://giftednys.org/