Our 3 and 5 year old students coloured an abacus sheet with our ISHIDO-SHIKI abacus characters, and exchanged it as a gift. Colouring is considered a right-brain activity, and so is the abacus. If we want to strengthen our abacus abilities, we need to use the right brain more, and conversely, abacus training can strengthen our right brain activity. In this colouring activity, we also teach children the joy of giving. Too many video games nowadays teach children the lesson that if you improve your skill, you can be destructive and get rewarded for that. We want to teach children that if they improve their skills, they can use them to make others happy.