Extra Practice exercises are downloadable worksheets of additional practice exercises. Print out these worksheets, work through the exercises, then check your work against the answer page.

Once you've practiced and mastered solving problems with ratios and proportions, think about how you can apply these skills to real data. Refer back to page 261, the first page of Chapter 5, in your Basic Mathematics textbook and review the fish conservation application.

Here's your chance to explore the World Wide Web and practice your new skills at the same time. Follow some related fish and wildlife Web sites to learn more about species conservation efforts and research work.

After you've practiced and after you've explored, don't forget about your upcoming Chapter Test. Prepare for your exam by working through our Chapter 5 Review, and then check your answers. These free downloadable files are accessible by selecting the Chapter Review button at the top of this page.

Good luck!