This is a summary print for the first half of the high school sophomore (K2) math course, distributed in the regular math classes at Tetsu-Rinkai after the Christmas mock exam. ① Numbers and Expressions: 13 pages ② Equations: 15 pages ③ Functions: 17 pages ④ Inequalities, Maximum/Minimum: 16 pages Although only a portion is shown in the images, it includes "Point!!" sections for each field, proofs of theorems, explanations of standard procedures, supplementary problems, and their solutions. Price reduction requests are welcome, so please let me know in the comments section or through the price reduction request function!