Since turning 3 Zilla has been very interested in numbers. He counts most anything in every language he knows. I came across this abacus from Gakken a while back but have hesitated to put it out for him. To be honest I really don't know how to use the thing. EEKS! The guide is all in Japanese so I am only getting the gist of what it says but so far Zilla doesn't seem to notice.
Behind the beads are a few cards which can be changed for various activities. In this picture he is doing an adding exercise. There is also a set of flashcards for practicing counting.
I never really learned how to use an abacus properly so I'm looking forward to looking up things online when I have some time. It will be interesting to learn a new thing along with Zilla for a change!