# Grade Band : 3-6 - PowerPoint PPT Presentation

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Grade Band : 3-6. Domain : Fractions. Why this domain is a priority for professional development. Fractions are the foundation for success in algebra. Key standards in this domain that pd should focus on. Attention to the meaning of fractions

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#### Presentation Transcript

Domain: Fractions

### Why this domain is a priority for professional development

• Fractions are the foundation for success in algebra.

### Key standards in this domain that pd should focus on

• Attention to the meaning of fractions

• 3.NF Develop understanding of fractions as numbers

• 1. Understand a fraction 1/b as the quantity formed by 1 part when a whole is partitioned into b equal parts; understand a fraction a/b as the quantity formed by parts of size 1/b.

• 4.NF.1 Explain why a fraction a/b is equivalent to a fraction (nxa)/(nxb) by using visual fraction models…

• 5.NF.3 (6,7) Apply and extend previous understandings of multiplication and division to multiply and divide fractions. (solve real world problems…, apply and extend previous understandings…)

### Key standards in this domain that pd should focus on

• Attention to the whole

• 3.NF Develop understanding of fractions as numbers

• 3. Explain equivalence of fractions in special cases, and compare fractions by reasoning about their size. (attention to the whole)

### Key standards in this domain that pd should focus on

• Attention to fractions as numbers

• 3.NF Develop understanding of fractions as numbers

• 2. Understand a fraction as a number on the number line; represent fractions on a number line diagram.

• 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 ½. Recognize that comparisons are valid only when the two fractions refer to the same whole.

### Key standards in this domain that pd should focus on

• Extending the meaning of the operations to fractions

• 4.NF.3d Solve word problems involving addition and subtraction of fractions referring to the same whole and having like denominators, e.g., by using visual fraction models and equations to represent the problem.

• 6.NS.1 Apply and extend previous understandings of multiplication and division to divide fractions by fractions.

### Existing resources that support these domains and standards

• Sybilla Beckmann, Mathematics for Elementary Teachers

• VMI, Focus on Fractions, by Laird, Norsden, Petit

• NCTM Focus in Grade 5

• Wu, Online resources on fractions (check his web page)

### Domains and standards that are in need of new resources

• Resources are there.

• We need professional development structures that support implementation