| January 16 | page 1, page 2 |
| January 18 | page 3, page 4 |
| January 23 | page 5, page 6 |
| January 25 | page 7,page 8,page 9 |
| January 28 | page 10,page 11 |
| January 30 | page 12,page 13,page 14 |
| February 1 | page 15,page 16 |
| February 4 | page 17,page 18,page 19,page 20,page 21,page 22 |
| February 6 | page 23,page 24,page 25,page 26,page 27,page 28 |
| February 8 | page 29,page 30 |
| February 11 | page 31 |
| February 13 | page 32,page 33,page 34 |
| February 15 | page 35,page 36,page 37 |
| February 18 | page 38,page 39,page 40 |
| February 22 | page 41,page 42,page 43 |
| February 25 | page 44,page 45,page 46,page 47 |
| February 27 | page 48,page 49,page 50 |
| March 5 | page 51,page 52 |
| March 7 | page 53,page 54,page 55,page 56 |
| March 17 | page 57,page 58 |
| March 31 | page 59,page 60,page 61 |
| April 4 | page 62,page 63,page 64 |
| April 7 | page 65,page 66,page 67 |
| April 9 | page 68 |
| April 11 | page 69 |
| April 14 | page 70,page 71,page 72,page 73,page 74 |
| April 16 | page 75,page 76,page 77 |
| Hyperbolic geometry | page 78,page 79,page 80,page 81 |