The following sites provide resources on teaching money skills. The links teach the critical skills including coin identification including skip counting and matching. Teaching a child or an adult with special needs money skills should include teaching in a multiple settings at appropriate times such as a grocery story, dry cleaners, and playing money games.
There are also good ideas on using functional materials to create money skill opportunities.
5 best educational board games for money management– Money Crashers
7 board games that help teach kids about money– Amy Boyington
17 fun money activities for kids– Self-Sufficient Kids
50 fun ways to teach your kids about money– Policygenius
Interactive learning money games and exercise– Money Instructor.com
Money activities for kids– Education.com
Online games and apps that teach kids about money– Washington State Department of Financial Institutions
Online money games– math-play.com
Teaching coin counting strategies– Caffeine Queen Teacher