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This Divisibility Rules Justified lesson plan also includes:
- Student Reference
- Worksheet
- Answer Key
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How do you know if a number is divisible? Instructors first prove the divisibility rules for three and four and then class members use this modeling to prove given divisibility rules for eight and nine either individually or in groups.
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Instructional Ideas
- Use the resource to introduce divisibility rules
Classroom Considerations
- Note that the resource uses abcd as a four-digit number rather than the product of four values, which may cause some confusion
- Learners need to understand expanded forms of numbers using place value
Pros
- Teacher guide contains cards with properties — perfect to use as posters in the classroom
- Includes discussion questions to help teachers guide learning
Cons
- References to CST/CAHSEE are outdated as California no longer administers these assessments