Social media is a great place to go for resources. Here are some places to start and people to follow:
RESEARCHERS
@joboaler
@suurch
@marian_small
@ruthbeatty11
DESMOS
@ddmeyer
EDUCATORS
@MrOrr_geek
@MathletePearce
@AlexOverwijk
@MarkChubb3
@mr_stadel
#wrdsbmath
#mathchat
#MTBoS
#elemmathchat
#mathed
Math Community
MTBoS Search Engine