Math
https://www.k-5mathteachingresources.com/Grades-3-5-IWB-Resources.html
Multiple Subjects
Reading
https://classroommagazines.scholastic.com/support/learnathome/grades-3-5.html
English and Language Arts
https://curriculum.eleducation.org/
http://www.fun4thebrain.com/english.html
Writing
https://writingwizard.longcountdown.com/handwriting_practice_worksheet_maker.php
Science