Here is a list of optional websites that can be utilized to practice skills. 

Prodigy: https://www.prodigygame.com/
Cool Math:https://www.coolmathgames.com/
Starfall: https://www.starfall.com/h/
ABC Mouse: https://www.abcmouse.com/abt/homepage
Virtual Field Trips: https://www.weareteachers.com/best-virtual-field-trips/
Brain Pop: https://www.brainpop.com/
Cosmic Kids Yoga: https://www.cosmickids.com/ 
Khan Academy: https://www.khanacademy.org/
Dr. Seuss: https://www.seussville.com/