Book excerpt: A companion series to our "Competitive Mathematics for Gifted Students," the series "Math Challenges for Gifted Students" offers additional material in practice test form. The workbooks are useful for assessment and for development of testing skills. In full color and with fully detailed solutions, the workbooks may be used as a fun introduction to competitive problem solving. However, the problems are a bit more difficult than actual Kangaroo problems, exploring a large number of known 'tips and tricks.' One could say it is much more concentrated in that, unlike actual exams, it has less 'filler' - almost every problem is 'tricky' and embodies a specific strategy. The material is excellent for training purposes and has been used by the authors in seminars with hundreds of the most gifted students in the Bay Area. The workbook contains six 24-question tests. After each test there is an answer key. The tests are followed by detailed solutions. The recommended time limit for each test is of 75 minutes. Students who have not been exposed to competitive problem solving will find this book extremely difficult and will need help from an adult. Without preparation, students who get 'A' in school generally score about 50 points out of 96 possible on Kangaroo level 1-2.