Zearn https://www.zearn.org/
XtraMath https://xtramath.org/#/signin/student_other
Rags to Riches Interpreting Remainders https://www.quia.com/rr/1035295.html
Subtraction Website https://www.splashlearn.com/subtraction-games-for-4th-graders
Multiplication.com https://www.multiplication.com/
Learn Zillion https://learnzillion.com/p/
Khan Academy https://www.khanacademy.org/coach/dashboard
Fractions on a Numberline http://www.sheppardsoftware.com/mathgames/fractions/mathman_fractions_numberline.htm
Woot Math https://www.wootmath.com/
Mr. Nussbaum https://www.mrnussbaum.com/fourth-grade-math/
Division Soccer http://www.math-play.com/division-with-remainder-game.html
Games for all topics https://sites.google.com/a/norman.k12.ok.us/mr-wolfe-s-math-interactive-whiteboard/4th-grade
Cool Math https://www.coolmath.com/
Math Mash Up https://www.youtube.com/watch?v=OfLz4AZvoJY
Science
Nat Geo https://education.nationalgeographic.org/resource/rock-cycle
Rock Cycle Rap https://www.youtube.com/watch?v=rkGVE6wNAzo
Rock Games https://matchthememory.com/tags/rocks
Mystery Science https://mysteryscience.com/lessons/seasonal/current-events
Bill Nye the Science Guy!
Erosion https://www.youtube.com/watch?v=HkralMlDmSA
Rocks and Soil https://www.youtube.com/watch?v=rmIsBu3XOco
Flight https://www.youtube.com/watch?v=ZJVPOTv1O7k
Electricity https://universeandmore.com/crack-the-circuit/
https://www.sciencekids.co.nz/gamesactivities/circuitsconductors.html