Model questions for the ACT exam are available from the ACT organization's ACTStudent site. Sample questions are available for the five categories of math, writing, English, reading and science.
The sample ACT questions provided by the ACT include five sets of sample questions in English and math, seven in science and four in reading. ACTStudent includes both sample writing prompts and sample writing essay answers. The educational company Peterson's also offers sample ACT questions and full practice tests in all five sections. The test preparation company PowerScore provides full practice tests with ACT sample questions in addition to individual practice questions.