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Occasionally an error or typo slips through the editors. Here are the correction lists for each book.

We have added helpful things to newer editions and made these available for download if you have an older edition.

The competency exams were created for the benefit of the teacher and the student, to determine what level of mathematics the student has mastered so they will know in which book to begin.

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Need a quick answer? You can find answers to many commonly-asked questions here.

On this page, we have made many of our additional materials available for download, and sorted them into categories for easy access.