UP:MA19.5.13
Vocabulary
- Resizing
- Scaling
- Product
- Factor
Knowledge
Students know:
- How to interpret multiplicative comparisons.
- Strategies to compare products with whole numbers using reasoning and justification.
Example: Which is greater? 5 x 2 x 13 or 13 x 9? 10 x 13 is greater than 9 x 13 because both expressions contain a factor of 13, but the scale factor of 10 will result in a greater product than a scale factor of 9. - Fraction meaning and magnitude of fractions less than and greater than 1.
Skills
Students are able to:
- Interpret multiplication as scaling.
- Use reasoning to compare products of multiplication expressions.
- Reason and explain when multiplying a given number by a fraction why the product will be greater than or less than the original number.
Understanding
Students understand that:
- a product reflects the size of its factors.
