| 22 | 20th LS(200304) Solving Linear System by Elimination Eqs(P22.. | Jp Park  | 2020-03-04 | 1 |
| 21 | 19th LS(200227) Solving Linear System by substitution Applic.. | Jp Park | 2020-02-28 | 1 |
| 20 | 18th LS(200225) Solving Linear System by substitution Eqs(P2.. | Jp Park | 2020-02-26 | 2 |
| 19 | 17th LS(200220) Linear System Eqs(P206 #13) | Jp Park | 2020-02-21 | 0 |
| 18 | 16th LS(200211) Exercise (P199) | Jp Park | 2020-02-12 | 1 |
| 17 | 15th LS(200206) Line Equations #15까지 (P190) | Jp Park | 2020-02-07 | 0 |
| 16 | 14th LS(200204) Line Equations through two points (P188) | Jp Park | 2020-02-05 | 1 |
| 15 | 13th LS(200130) Point and Slope Line Equations(P185) | Jp Park | 2020-01-31 | 2 |
| 14 | 12th LS(200128) Graphing Line Equations(P182) | Jp Park | 2020-01-29 | 1 |
| 13 | 11th LS(200123) Graphing Linear Equations(P177) | Jp Park | 2020-01-24 | 1 |
| 12 | 10th LS(200121) Graphing Linear Equations(P175 EX2) | Jp Park | 2020-01-22 | 1 |
| 11 | 9th LS(200116) Line Graph (P171 #23) | Jp Park | 2020-01-17 | 0 |
| 10 | 8th LS(200114) Line Graph (P163) | Jp Park | 2020-01-15 | 0 |
| 9 | 7th LS(200109) Line Graph (P160) | Jp Park | 2020-01-10 | 1 |
| 8 | 6th LS(200107) Line Graph (P157 #7) | Jp Park | 2020-01-08 | 2 |
| 7 | 5th LS(200102) Line Graph (P155 #35) | Jp Park | 2020-01-03 | 0 |
| 6 | 4th LS(191227) Line Graph (P151 On your own) | Jp Park | 2019-12-27 | 0 |
| 5 | 3rd LS(191224) Line Graph (P147 #23) | Jp Park | 2019-12-25 | 0 |
| 4 | 2nd LS(191219) Exercise(P39) | Jp Park | 2019-12-20 | 0 |
| 3 | 1st LS(191217) Applications(P31) | Jp Park | 2019-12-18 | 3 |
