My baby is 17 months old and I want to teach him how to use abacus. I did a little research on internet and I found that website:
http://www.nurtureminds.com/Year-1-textbook.htm (they use soroban abacus)
I bought that program with abacus. I should have it in few days. But I can't tell you no more about it until I will practice. I plan to start teaching my baby at 2. He has great motor skill (I started pre-writing activities long time ago). At this point I started to show him abacus flashcards on BK.
My baby knows how to count to 20. I've read a lot about kids 3 or 4 years old who can't understand the context of number 5 in one bead (on abacus). Maybe when we start early it will not be an issue (this is just my thought).
These are some other links I found interesting about Soroban and how you can test your baby later on (second link).
http://www.soroban.com/whats_soroban_eng.htmlhttp://ssbrain.com/english/index.htmlhttp://webhome.idirect.com/~totton/soroban/THE%20ABACUS%20HANDBOOK.pdf I found that very informative too.
http://webhome.idirect.com/~totton/abacus/pages.htm#Soroban1 This is very long free description in pdf.
http://sorobanabacus.com/ You can sign up for free basic lessons on internet, very short, great for babies
I hope that will help
