Associate Professor

Mathematics Department

Room M214

Tel 217.351.2885 · Fax 217.373.3898

lblackburn@parkland.edu

Current Schedule

Teaching History

- Quiz Wednesday July 23 on 2.1, 2.2, 2.3

- 1.1: 1, 3, 5, 7, 9, 11, 13, 15, 17, 27, 37, 41, 47, 49, 51, 55, 77, 81
- 1.2: 5, 7, 9, 11, 13, 15, 17, 19, 21, 23, 25, 27, 29, 31, 33, 35, 37, 41, 43, 47
- 1.3: 1, 5, 15, 23, 27, 29
- 2.1: 3, 5, 9, 11, 13, 15, 17, 19, 21, 23, 25, 27, 31, 33, 35, 37, 39, 41, 47, 49, 51
- 2.3: 5, 9, 11, 17, 19, 31, 33, 47, 55, 59
- 3.1: 5, 11, 13, 15, 17, 19, 27, 39, 41, 49, 51
- 3.2: 25, 27, 29, 31, 33, 35
- 3.3: 3, 9, 13, 23, 25
- 3.4: 5, 25
- 4.1: 9, 11, 17, 21, 23, 27, 29, 35, 39, 45, 53
- 4.2: 1, 3, 5, 7, 9, 11, 13, 15, 17, 19, 21, 23, 25, 35
- 4.3: 3, 5, 7, 9, 11, 15, 17, 19, 23, 25, 29, 31, 33, 35, 39
- 4.4: 1, 5, 9, 13, 17, 21, 23, 29, 31, 35, 37, 39, 41, 43, 45, 49, 51
- 4.5: 1, 3, 5, 7, 9, 11, 13, 15, 17, 19, 21, 23, 25, 27, 33, 35, 39, 41, 45, 47, 51, 53, 55
- 4.6: 5, 7, 9, 13, 17, 23, 25, 29, 33, 39, 41, 43
- 5.1: 3, 7, 11, 15, 17, 21, 25, 31, 37, 41, 45, 47, 49, 51, 53, 55, 59
- 5.2: 3, 7, 9, 11, 15, 17, 19, 23, 29, 35, 39, 41, 45, 51, 65, 71, 75, 77, 79
- 5.3: 1, 5, 7, 13
- 7.1: 3, 5, 13, 17, 21, 27, 39
- 7.2: 1, 3, 5, 7, 9, 11, 13, 17, 19, 21
- 1.1: 3, 5, 7, 9, 13, 15, 17, 21, 27, 33, 35, 37, 39, 41, 43, 45
- 1.2: 1, 5, 7, 11, 15, 25, 27, 29, 33
- 1.4: 1, 3, 7, 11, 15, 17, 19, 21, 23, 27, 29(a)(b), 33, 35, 37
- 1.5: 1, 3, 5, 9, 13, 17, 21, 33, 35(read example 4), 37
- 1.6: 1, 3, 7, 11, 13, 19, 21, 23, 27, 29, 33, 35, 39
- 1.8: 1, 9, 11
- 1.3: 21
- 6.1: 5
- 6.2: 3
- 2.1: 1, 3, 5, 13, 21, 25, 33, 35, 39, 43, 45
- 2.2: 1, 5, 7, 9, 13, 17, 21, 23
- 2.3: 1, 3, 5, 7, 9, 11, 13, 15, 17, 19, 21, 23, 25, 27, 29, 31, 33, 35, 37, 39, 41
- 2.4: 1, 3, 13, 14, 17, 19 (you do not have to make any graphs)
- 2.5: 1, 3, 9, 19, 21, 23, 25, 27, 29, 31, 39

The following are lessons and worksheets that constitute a quick course in trigonometry ideal for students reviewing before taking a calculus course. Read the lesson, try the worksheet, and check your solutions. These files could also be used by a student studying trigonometry for the first time.

- Lesson 01 Notes | Lesson 01 Worksheet | Solutions | Angles
- Lesson 02 Notes | Lesson 02 Worksheet | Solutions | Similar Triangles
- Lesson 03 Notes | Lesson 03 Worksheet | Solutions | The Six Trigonometric Functions
- Lesson 04 Notes | Lesson 04 Worksheet | Solutions | Special Triangles
- Lesson 05 Notes | Lesson 05 Worksheet | Solutions | General Angles
- Lesson 06 Notes | Lesson 06 Worksheet | Solutions | Radians
- Lesson 07 Notes | Lesson 07 Worksheet | Solutions | Trigonometric Functions of General Angles
- Lesson 08 Notes | Lesson 08 Worksheet | Solutions | Graphing the Sine and Cosine Functions
- Lesson 09 Notes | Lesson 09 Worksheet | Solutions | Graphing the Other Trigonometric Functions
- Lesson 10 Notes | Lesson 10 Worksheet | Solutions | Amplitude and Period Changes
- Lesson 11 Notes | Lesson 11 Worksheet | Solutions | Vertical Shifts and Phase Shifts
- Lesson 12 Notes | Lesson 12 Worksheet | Solutions | Basic Right Triangle Applications
- Lesson 13 Notes | Lesson 13 Worksheet | Solutions | More Right Triangle Applications
- Lesson 14 Notes | Lesson 14 Worksheet | Solutions | Some Fundamental Trigonometric Identities
- Lesson 15 Notes | Lesson 15 Worksheet | Solutions | More Fundamental Trigonometric Identities
- Lesson 16 Notes | Lesson 16 Worksheet | Solutions | Introduction to Trigonometric Equations
- Lesson 17 Notes | Lesson 17 Worksheet | Solutions | More Trigonometric Equations
- Lesson 18 Notes | Lesson 18 Worksheet | Solutions | Solving Trigonometric Equations by Factoring
- Lesson 19 Notes | Lesson 19 Worksheet | Solutions | Addition/Subtraction Identities for Sine
- Lesson 20 Notes | Lesson 20 Worksheet | Solutions | Cofunction Identities
- Lesson 21 Notes | Lesson 21 Worksheet | Solutions | Addition/Subtraction Identities for Cosine and Tangent
- Lesson 22 Notes | Lesson 22 Worksheet | Solutions | Double-Angle and Power-Reducing Identities
- Lesson 23 Notes | Lesson 23 Worksheet | Solutions | The Inverse Sine Function
- Lesson 24 Notes | Lesson 24 Worksheet | Solutions | The Inverse Cosine and Tangent Functions

The files found by clicking the following link constitute a quick review of major geometry topics taught at the high school level. They are ideal for a student reviewing for a placement exam or a course that uses geometry.

Atomic Chess is a fun chess variant that can be played on the Free Internet Chess Server (FICS) . My handle on that site is Rekursiv. I've collected together here some books, articles, and videos that I've authored about this game.

- Atomic Chess Rules (video)
- Atomic Chess Rules (pdf)
- Sample Game (pdf)
- One-move Atomic Chess Puzzles (pdf)
- Atomic Chess Openings for Beginners - Part I (video)
- Atomic Chess Openings for Beginners - Part II (video)
- Atomic Chess : Elementary Endgames (2011) (pdf)
- Atomic Chess : Elementary Tactics (2011) (pdf)
- Rekursiv vs. Grandlapin (April 1, 2011) (video)
- Grandlapin vs. Rekursiv (April 1, 2011) (video)

Visit my chess blog .