SALTA 4th grade

Focus

Strand: Mathematical Practice Standard #4

p. 329E

Model with mathematics. Identify the mathematical elements of a situation and create a mathematical model that shows the relationships among them. Identify important quantities in a contextual situation, use mathematical models to show the relationships of those quantities, analyze the relationships, and draw conclusions. Models may be verbal, contextual, visual, symbolic, or physical. Fourth grade students model with math when they use expressions, equations, number lines, fraction strips, and other pictures to represent problems involving fractions. Listen and look for students that exhibit the following behaviors:

4.MP.4

• identify the correct prior knowledge that needs to be applied to solve a problem • identify the hidden question(s) in multiple-step problems • use numbers, symbols, and words to solve problems • identify the operation(s) needed to solve a problem • use estimation as appropriate

Sentence Frames: •

My model is working because_________

• My results make sense because _____________

Focus

Standards

Curriculum Supports – enVision 2020

Vocabulary

Strand: Number and Operations — Fractions Fourth grade students will build fractions from unit fractions by applying and extending previous understandings of operations on whole numbers. Denominators for fourth grade are limited to 2, 3, 4, 5, 6, 8, 10, 12, and 100.

Topic 9: Understand Addition and Subtraction of Fractions

4.NF.3 4.NF.4

Topic 9:

• decompose • compose • mixed number

Pick a Project: •

You Herb it Here First!

Code Talkers

• •

Standard 4.NF.3 Understand a fraction a/b with a> 1 as a sum of fractions 1 /b . In other words, any fraction is a sum of unit fractions.

F armers’ Markets Can’t be Beat

a. Understand addition and subtraction of fractions as joining and separating parts referring to the same whole. b. Decompose a fraction into a sum of fractions with the same denominator in more than one way, recording each decomposition by an equation. Justify decompositions, for example, by using a visual fraction model. For example, 3/8 = 1/8 + 1/8 + 1/8; 3/8 = 1/8 + 2/8; 2 1/8 = 1 + 1 + 1/8; 2 1/8 = 8/8 + 8/8 + 1/8. c. Add and subtract mixed numbers with like denominators, for example, by replacing each mixed number with an equivalent fraction, and/or by using properties of operations and the relationship between addition and subtraction. For example, 3 1/4 + 2 1/4 =

9-1 Model Addition of Fractions 9-2 Decompose Fractions 9-3 Add Fractions with Like Denominators 9-4 Model Subtraction of Fractions 9-5 Subtract Fractions with Like Denominators 9-6 Add and Subtract Fractions With Like Denominators 9-7 Model Addition and Subtraction of Mixed Numbers 9-8 Add Mixed Numbers 9-9 Subtract Mixed Numbers