Constructed in a "Jeopardy!"-like format, each title in the Challenge! series contains activities composed of answers.  Your students' job, of course, is to formulate the correct questions to those answers.  Each game has five levels of difficulty, tailoring problems for your students' individual needs. 

Challenge! is the fun way to prepare for standardized tests, and can be used as homework, to complement regular curriculum, or in-class review.  Comes spiral-bound for easy copying. 

Biology Challenge! covers topics such as:

• Organic compounds
• Cell membranes
• Nucleic acids
• Bacteria and viruses
• Leaves and flowers
• Invertebrates and vertebrates
• Human biology