Shinken Zemi Elementary Course Challenge 1st Grade Math Machine Addition and Subtraction Capsule Included → Starting with the very beginning of calculation, counting the number of circles. There's a robot battle mode, and Korasho cheers you on. The battery may be running low, but operation has been confirmed. Please prepare a CR2032 3V battery. First, practice counting the circles without the capsule, and once you can do that, attach the capsule and learn addition. Popular Keywords... Kodomo Challenge