Here are several sites that your child can use their math NWEA scores to help them practice at their level.
https://www.sowashco.org/ro/pages/studentlinks/map/
https://www.linnmar.k12.ia.us/schools/Westfield/Westweb/NWEA_Math_RIT_Sites.html
https://sites.google.com/a/wfsd.k12.ny.us/nwea/math-map-activities
https://www.belleplaine.k12.mn.us/page/3028
https://www.fredon.org/student-resources/rit-games