I finally bought it! Thanks to Nicole for her wonderful recommendation.
This wooden abacus is the best tool to teach our children the basics of mathematics. For the beginners, they can learn to count from one to ten and gradually move on to twenty, thirty and so on. They can also learn to count by two, by five and by ten. There are just too many fun ways to learn counting with it.
This wooden abacus comes with colorful beads too. Besides learning counting, they can also learn the colors. I wanted to buy it for so long, but I kept forgetting.
Hubby finally bought it from Ikea today. MULA N abacus, $15.00 from Ikea. Check it out!