| 25 | 23th LS(200415) Ch5.6 Connecting Standard and Vertex Form(P3.. | Jp Park  | 2020-04-16 | 9 |
| 24 | 22th LS(200411) Ch5.5 Solving Problems using Quadratic Rela.. | Jp Park | 2020-04-12 | 3 |
| 23 | 21th LS(200408) Ch5.1 Stretching and Reflecting(P258) | Jp Park | 2020-04-09 | 1 |
| 22 | 20th LS(200404) Ch4.5 Fatoring Exercise(P231) | Jp Park | 2020-04-05 | 3 |
| 21 | 19th LS(200401) Ch4.3 Fatoring ax^2+bx+c(P212) | Jp Park | 2020-04-02 | 3 |
| 20 | 18th LS(200328) 3.5 Quadratic Models Using Factored Form(P18.. | Jp Park | 2020-03-29 | 1 |
| 19 | 17th LS(200325) 3.2 연습문제(P148) | Jp Park | 2020-03-26 | 0 |
| 18 | 16th LS(200321) Properties of Graphs of Quadratic Relations(.. | Jp Park | 2020-03-22 | 2 |
| 17 | 15th LS(200318) Centroid, Circumcenter, Orthocenter & ch2 ex.. | Jp Park | 2020-03-19 | 1 |
| 16 | 14th LS(200314) Centroid, Circumcenter, Orthocenter | Jp Park | 2020-03-15 | 3 |
| 15 | 13th LS(200311) Circle | Jp Park | 2020-03-12 | 0 |
| 14 | 12th LS(200307) Algebraic Fractions | Jp Park | 2020-03-08 | 1 |
| 13 | 11th LS(200304) x, y, z system Eqs+Circle | Jp Park | 2020-03-05 | 1 |
| 12 | 10th LS(200229) 시험대비 복습 | Jp Park | 2020-03-05 | 6 |
| 11 | 9th LS(200226) Segments, Perpendicular bisect | Jp Park | 2020-02-27 | 1 |
| 10 | 8th LS(200222) Solving Linear Systems:Elimination(P55) | Jp Park | 2020-02-23 | 0 |
| 9 | 7th LS(200215) Solving Linear Systems:Substitution(P39 #9) | Jp Park | 2020-02-16 | 7 |
| 8 | 6th LS(200208) Solving Linear Eqs(P20) | Jp Park | 2020-02-09 | 0 |
| 7 | 5th LS(200205) Linear Eqs(P14) | Jp Park | 2020-02-06 | 1 |
| 6 | 4th LS(200129) Lines(P23) | Jp Park | 2020-01-30 | 3 |
