The Visual Soroban ProjectDrill 0. Smart MovesThese are the suggestions for soroban fingering from Kojima (1954; p. 29). These are optional, and nobod should be inhibited b them. !n the other hand, it is suggested that the earlier one learns them, the better. Fingering, all cases ". #ush $!%&' beads (# )ith the thumb. *or all other mo+es use the first finger. Order of moves on one rod 1. #ush $!%&' beads (# (thumb) and an (##&' bead ,!%- (finger) simultaneousl. %e .all this mo+e the pinch. 2. #ush $!%&' beads ,!%- (finger) then an (##&' bead (# (finger) in this order. %e .all this mo+e the check (/ui.0 do)n then up). 1. #ush an (##&' bead ,!%- (finger) then $!%&' beads ,!%- (finger) in this order. %e .all this mo+e the flick (/ui.0 do)n and do)n). 4. #ush $!%&' beads (# (thumb) and an (##&' bead (# (finger) simultaneousl. %e .all this mo+e the double-push. Order of moves on to adjacent rods 5. *or 2,,3T3!-, mo+e on the '345T rod, then the $&*T rod. 6. *or 7(8T'29T3!-, mo+e on the $&*T rod, then the '345T rod. #ra.ti.e these using a se/uen.e su.h as this: 9lear (sho)s ") 2dd ; ('ule 1, pin.h, sho)s ;) Ta0e a)a ; ('ule 2, .he.0, sho)s ") 2dd 4 ('ule ", thumb, sho)s 4) 2dd 2 ('ule 1, fli.0, sho)s 6) Ta0e a)a 1 ('ule 4, doublees for subtra.tion, using onl the four unit beads on the units rod. #erform ea.h e=er.ise in these steps. *or e=ample, the e=er.ise 1 < 1should be performed li0e this: 1. 7tudent .lears the soroban 2. Tea.her (or partner) re.ites aloud @7et 1@ 1. 7tudent sets 1 4. Tea.her sas, @subtra.t 1@ (all this is indi.ated b @1 < 1@) 5. 7tudent pushes one unit bead, using 7mart Ao+es onl. 6. *inall, .he.0 the result (sho)s 2) 5ere are all 1" e=er.i>es for subtra.tion of t)o numbers. 1 < 1 2 < 1 2 < 2 1 < 1 1 < 2 1 < 1 4 < 1 4 < 2 4 < 1 4 < 4 Revised 07 january, 2011 by Ralph Abraham The Visual Soroban ProjectSoroban Drill !$M Mi'ed Drill for Tutorial !$#ddition ith the %nit &eadsThese are e=er.i>es for mi=ed addition and subtra.tion, using onl the four unit beads on the units rod. 5ere are all 64 mi=ed e=er.i>es for addition and subtra.tion of four numbers totaling 4. "1. 1 < 1 ? 1 ? 1 "2. 1 < 1 ? 2 ? 2 "1. 1 < 1 ? 1 ? 1 "4. 1 < 1 ? 4 "5. 1 ? 1 < 2 ? 4 "6. 1 ? 1 < 1 ? 1 ";. 1 ? 1 ? 1 ? 1 "B. 1 ? 1 ? 2 "9. 1 ? 2 < 1 ? 4 1". 1 ? 2 < 2 ? 1 11. 1 ? 2 < 1 ? 2 12. 1 ? 2 ? 1 11. 1 ? 1 < 4 ? 4 14. 1 ? 1 < 1 ? 1 15. 1 ? 1 < 2 ? 2 16. 1 ? 1 < 1 ? 1 1;. 2 < 2 ? 1 ? 1 1B. 2 < 2 ? 2 ? 2 19. 2 < 2 ? 1 ? 1 2". 2 < 2 ? 4 21. 2 < 1 < 1 ? 4 22. 2 < 1 ? 1 ? 2 21. 2 < 1 ? 2 ? 1 24. 2 < 1 ? 1 25. 2 ? 1 < 1 ? 4 26. 2 ? 1 < 2 ? 1 2;. 2 ? 1 < 1 ? 2 2B. 2 ? 1 ? 1 29. 2 ? 2 < 4 ? 4 1". 2 ? 2 < 1 ? 1 11. 2 ? 2 < 2 ? 2 12. 2 ? 2 < 1 11. 1 < 1 ? 1 ? 1 14. 1 < 1 ? 2 ? 2 15. 1 < 1 ? 1 ? 1 16. 1 < 1 ? 4 1;. 1 < 2 < 1 ? 4 1B. 1 < 2 ? 1 ? 2 19 1 < 2 ? 2 ? 1 4" 1 < 2 ? 1 41. 1 < 1 < 2 ? 4 42. 1 < 1 < 1 ? 1 41. 1 < 1 ? 1 ? 1 44. 1 < 1 ? 2 45. 1 ? 1 < 4 ? 4 46. 1 ? 1 < 1 ? 1 4;. 1 ? 1 < 2 ? 2 4B. 1 ? 1 < 1 ? 1 49. 4 < 4 ? 1 ? 1 5". 4 < 4 ? 2 ? 2 51. 4 < 4 ? 1 ? 1 52. 4 < 4 ? 4 51. 4 < 1 < 1 ? 4 54. 4 < 1 ? 1 ? 2 55 4 < 1 ? 2 ? 1 56 4 < 1 ? 1 5;. 4 < 2 < 2 ? 4 5B. 4 < 2 < 1 ? 1 59. 4 < 2 ? 1 ? 1 6". 4 < 2 ? 2 61. 4 < 1 < 1 ? 4 62. 4 < 1 < 2 ? 1 61. 4 < 1 < 1 ? 2 64. 4 < 1 ? 1 Revised 07 january, 2011 by Ralph Abraham The Visual Soroban ProjectSoroban Drill !(# #ddition Drill for Tutorial !(#ddition ith the %nit &eads and Five &ead5ere are all 2" e=er.i>es for addition of t)o numbers on the unitses. #ra.tise in random order. 'ule F1 applies to all. 4 ? 1 C 1 D 5 < 4 E 4 ? 2 C 2 D 5 < 1 E 4 ? 1 C 1 D 5 < 2 E 4 ? 4 C 4 D 5 < 1 E 1 ? 2 C 2 D 5 < 1 E 1 ? 1 C 1 D 5 < 2 E 1 ? 4 C 4 D 5 < 1 E 2 ? 1 C 1 D 5 < 2 E 2 ? 4 C 4 D 5 < 1 E 1 ? 4 C 4 D 5 < 1 E Revised 2! october, 2010 by Ralph Abraham The Visual Soroban ProjectSoroban Drill !(S Subtraction Drill for Tutorial !(Subtraction ith the %nit*&eads and Five*&ead5ere are all 25 e=er.i>es for subtra.tion of t)o numbers on the units