| 80 | 80th LS(211107) Tree Diagram | Jp Park  | 2021-11-07 | 0 |
| 79 | 79th LS(211104) Circle Theorem 학교 문제 | Jp Park | 2021-11-05 | 0 |
| 78 | 78th LS(211031) Circle Theorem and Sequence | Jp Park | 2021-10-31 | 0 |
| 77 | 77th LS(211021) Sine and cosine Law (PDF 224) | Jp Park | 2021-10-22 | 0 |
| 76 | 76th LS(211017) 학교 자료 질문 | Jp Park | 2021-10-17 | 3 |
| 75 | 75th LS(211007) Sine Rule (PDF 223) | Jp Park | 2021-10-07 | 0 |
| 74 | 74th LS(211003) Area of Triangle (PDF 211) | Jp Park | 2021-10-03 | 0 |
| 73 | 73th LS(210926) Finding Angles (PDF 202) | Jp Park | 2021-09-26 | 1 |
| 72 | 72th LS(210923) Trigonometry (학교 자료 PDF 190 #15) | Jp Park | 2021-09-24 | 0 |
| 71 | 71th LS(210919) Probability (학교 자료 PDF 42 Q69) | Jp Park | 2021-09-19 | 0 |
| 70 | 70th LS(210916) Ratio, Percent (학교 자료) | Jp Park | 2021-09-17 | 0 |
| 69 | 69th LS(210912) Histogram (학교 자료)+Statistic | Jp Park | 2021-09-12 | 0 |
| 68 | 68th LS(210909) Histogram (학교 자료) | Jp Park | 2021-09-10 | 0 |
| 67 | 67th LS(210905) Ratio (학교자료) | Jp Park | 2021-09-05 | 0 |
| 66 | 66th LS(210829) Cumulative Frequency Curve (PDF 456) | Jp Park | 2021-08-29 | 0 |
| 65 | 65th LS(210826) Histogram (PDF 443 #3) | Jp Park | 2021-08-27 | 0 |
| 64 | 64th LS(210822) Probability (PDF 408) | Jp Park | 2021-08-22 | 0 |
| 63 | 63th LS(210819) Probability 학교자료 | Jp Park | 2021-08-19 | 0 |
| 62 | 62th LS(210808) Scatter plot (PDF 448) | Jp Park | 2021-08-08 | 0 |
| 61 | 61th LS(210805) Histogram (PDF 437 #6) | Jp Park | 2021-08-05 | 0 |
