Monday, February 17, 2014

4th Grade Fraction and Decimal Concepts

Common Core Standard
4.NF.5: Express a fraction with denominator 10 as an equivalent fraction with denominator 100, and use this technique to add two fractions with respective denominators 10 and 100.2 For example, express 3/10 as 30/100, and add 3/10 + 4/100 = 34/100.
4.NF.6: Use decimal notation for fractions with denominators 10 or 100. For example, rewrite 0.62 as 62/100; describe a length as 0.62 meters; locate 0.62 on a number line diagram.
4.NF.7: Compare two decimals to hundredths by reasoning about their size. Recognize that comparisons are valid only when the two decimals refer to the same whole. Record the results of comparisons with the symbols >, =, or <, and justify the conclusions, e.g., by using a visual model.

Download this replacement unit on Fraction and Decimal Concepts:

A thought about fraction and decimal concepts…
If fractions are a bit of a mystery for our 4th graders, then the relationship between fractions and decimals strikes them as entirely arbitrary. Throughout this unit, we will build upon the students’ prior knowledge of fractions and its representations (area model and number line) to show how fractions and decimals are related to one another. The connections are numerous, so it is no wonder that students get confused!

Nearly every lesson is written with multiple representations of decimal fractions. As a result, students will have ample opportunities to compare and contrast fractions with various representations of decimals leading to a deep understanding of how fractions and decimals are related to each other.