Jo Boaler was named by the BBC as one of the 8 "people whose ideas are challenging the future of education".
If you're interested in math, or have questions about the way math instruction has changed and continues to change, I would highly recommend visiting Jo Boaler's website, or just reading the article itself (I've linked both below). It offers significant clarity around the concept of number sense vs rote memorization, as well as offering take away activities for home and classroom use.
I took Jo Boaler's online course through Stanford last year and found it truly inspiring, and hope some of these resources pique your interest, and excite you about mathematics:
Jo Boaler's youcubed website: https://www.youcubed.org/
Fluency Without Fear article: https://www.youcubed.org/evidence/fluency-without-fear/
Parents' Beliefs about Math Change Their Children's Achievement: https://www.youcubed.org/resources/parents-beliefs-math-change-childrens-achievement/
6 Ways to Support Your Child's Mathematical Development: https://www.youcubed.org/resources/6-ways-support-childs-mathematical-development/