| 53 | 53th LS(210112) Ch11.1 Using Normal Distribution(P602) | Jp Park  | 2021-01-13 | 1 |
| 52 | 52th LS(210105) Ch11.1 Using Normal Distribution(P598) | Jp Park | 2021-01-06 | 1 |
| 51 | 51th LS(201222) Ch10.5 Permutation and Combination(P574) | Jp Park | 2020-12-23 | 1 |
| 50 | 50th LS(201215) Ch10.2 Independent & dependent Events(P552) | Jp Park | 2020-12-16 | 1 |
| 49 | 49th LS(201209) Ch9.8 Using sum and difference(P524) | Jp Park | 2020-12-09 | 3 |
| 48 | 48th LS(201201) Ch9.6 Modeling with Trigonometry(P512) | Jp Park | 2020-12-02 | 5 |
| 47 | 47th LS(201117) Ch9.4 Grphing sin and cosine function(P494) | Jp Park | 2020-11-18 | 2 |
| 46 | 46th LS(201110) Ch9.2 angles and radian(P476) | Jp Park | 2020-11-11 | 2 |
| 45 | 45th LS(201103) Ch8.5 Using Recursive Rules(P448) | Jp Park | 2020-11-04 | 2 |
| 44 | 44th LS(201027) Ch8.4 Finding Sums of Infinite Geometric Ser.. | Jp Park | 2020-10-28 | 1 |
| 43 | 43th LS(201020) Ch8.2 Atithmetic Sequence(P424) | Jp Park | 2020-10-21 | 1 |
| 42 | 42th LS(201006) Ch7.5 Solving Rational Eqs(P394) | Jp Park | 2020-10-07 | 12 |
| 41 | 41th LS(200929) Ch7.2 Graphing Rational function(P368) | Jp Park | 2020-09-30 | 2 |
| 40 | 40th LS(200922) Ch6.7 Modeling With Exponential function(P34.. | Jp Park | 2020-09-23 | 4 |
| 39 | 39th LS(200915) Ch6.5 Properties of Log(P330) | Jp Park | 2020-09-16 | 1 |
| 38 | 38th LS(200908) Ch6.3 Log and Log Function(P309) | Jp Park | 2020-09-09 | 2 |
| 37 | 37th LS(200901) Ch6.1 Exponential Growth and Decay(P299) | Jp Park | 2020-09-02 | 1 |
| 36 | 36th LS(200825) Ch5.5 Performing Function Operations(P272) | Jp Park | 2020-08-26 | 2 |
| 35 | 35th LS(200818) Ch5.3 Graphing Radical Functions(P254) | Jp Park | 2020-08-19 | 1 |
| 34 | 34th LS(200811) Ch4.9 Quadratic Regression(P223) | Jp Park | 2020-08-12 | 2 |
