Grade 4 Fractions Great Falls Public Schools（4级分数大瀑布公立学校）.pdfVIP

Grade 4 - Fractions Essential Questions: 1. Why do we use numbers, what are their properties, and how does our number system function? 2. Why do we use estimation and when is it appropriate? 3. What makes a strategy effective and efficient and the solution reasonable? 4. How do numbers relate and compare to one another? Essential Vocabulary - partition(ed), fraction, unit fraction, equivalent, multiple, reason, denominator, numerator, comparison/compare, ‹, ›, =, benchmark fraction, partition(ed), whole, tenth, hundredth We want students to understand that all numbers have parts, values, uses, types, and we use operations and reasonableness to work with them. 4.NF.1: Explain why a fraction a/b is equivalent to a fraction (n × a)/(n × b) by using visual fraction models, with attention to how the number and size of the parts differ even though the two fractions themselves are the same size. Use this principle to recognize and generate equivalent fractions. Grade 4 Enduring Understandings Students will know… Students will understand… Students will be able to… 1. The definition of a numerator and denominator. 1. That fractions are comprised of equal sized 1. Draw models using fractions. 2. The definition of equivalent. pieces. 2. Draw models to show equivalent fractions with unlike denominators. 4.NF.2: Compare two fractions with different numerators and different denominators, e.g., by creating common denominators or numerators, or by comparing to a benchmark fraction such as 1/2. Recognize that compa