Discovering / Dimensions Mathematics (Gr. 7-10)

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In general, the newer Singapore material is visually more appealing – and this series is no exception. Perhaps it’s the full-color texts, or the graphic icons, or the occasional photograph or illustration, but there’s really no doubt. Compared to New Elementary Math (the other Singapore series at the secondary level), visually, it’s a no-brainer. However, there are other considerations and I suspect that choices will be made in both directions.

A comparison of the scope and sequence of the two courses shows surprisingly few differences, although they are there if you look closely. Both include integrated coverage of beginning and advanced algebra topics, geometry, and some trigonometry. DM lacks an in-depth review of arithmetic topics but includes matrices, radian measures, some additional data presentation forms (box & whisker plots; stem & leaf plots), and standard deviation. DM does not include as many advanced trig topics (see description for Discovering Additional Mathematics). There is also a difference in the degree of difficulty in terms of problems worked. DM has fewer challenging problems and exercises are slightly shorter, although they are divided as to problem difficulty. As in NEM, lessons in the text consist of explanations and worked examples, but in DM each worked example is followed by a Try It! challenge that allows students to see if they have understood. Each DM chapter concludes with review, compared to every 3-4 chapters in NEM. Additionally, there are some open-ended problems and journal writing questions. Sidebar information includes brief biographical information on notable mathematicians, discussion questions, recall points, and information tidbits. Textbooks have answers to the reviews and most exercises in the back, but the Textbook Teacher’s Guide includes fully worked solutions to all problems along with weekly lesson plans that include helpful website resources. Textbooks vary from 150 to 215 pgs with most running in the 200 pg neighborhood. Teacher’s Guides also vary in terms of page length but tend to be 150 pgs on average, both paperback.

Workbooks (with an accent color) for each level are designed to give students more practice. The publisher suggests that the student refer to the summary of important concepts in the text before tackling the workbook problems. The workbook questions for each chapter divided into basic, further, and challenging practice categories as well as enrichment. As with the textbook there is a complete answer key in the back of the workbook, but the Workbook Teacher’s Edition shows worked solutions for every problem. Avg. 160 pgs, pb

Question Banks provide an unusual tool. Included are problems for each textbook chapter (number per chapter varies) labeled by difficulty level (low, medium, high). Each problem is shown with a worked solution. These problems allow the teacher to make selections for tests and assessments. The drawback is that each problem must be hand copied/typed as the solutions are “right there” and can take up a good part of each page. Avg. 390 pgs, pb ~ Janice

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Dimensions Math Common Core State Standards Textbook 8A Item #: 019706
Grade: 8
Rainbow Price: $23.00

Dimensions Math Common Core State Standards Textbook 8B Item #: 019736
Grade: 8
Rainbow Price: $23.00

Dimensions Math Common Core State Standards Workbook 8B Item #: 019811
Grade: 8
Rainbow Price: $8.80

Dimensions Math Common Core State Standards Workbook 8A Item #: 019737
Grade: 8
Rainbow Price: $8.80

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