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Help
If you have any questions, you are always welcome to contact us. We'll get back to you as soon as possible, withing 24 hours on weekdays.
Customer service
All questions about your order, return and delivery must be sent to our customer service team by e-mail at yourstore@yourdomain.com
Sale & Press
If you are interested in selling our products, need more information about our brand or wish to make a collaboration, please contact us at press@yourdomain.com
Teachers and parents who have used Challenge Math and Primary Grade Challenge Math have asked for a book for students whose skill levels fall in between these two popular resources for high ability learners. Upper Elementary Challenge Math is designed for those students in grades 35 who need more challenging material than they typically encounter in most math curriculums. As in other Zaccaro math books, problems are presented at 4 levels of difficulty after each chapter's instruction. In addition, each chapter includes multiple problem sets in which a single problem type is presented in increasingly complex steps, illustrating how a simpler problem can progress from one step to multistep problem solving. Detailed answer section. Reproducible.
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birth defects, or other reproductive harm.
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⚠️ California Proposition 65 Warning: Some products sold on this website may expose you to chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information, visit www.P65Warnings.ca.gov.
