Fractions

Adding and Subtracting Unlike Fractions  

Grade 4 students in Ms Scott's class have been exploring fractions in Math in Focus Chapter 6.

 

Students used their text books to explore adding fractions.



Using bar models, students worked on subtracting unlike fractions.

 

Students worked in small groups to share their knowledge of adding and subtracting unlike fractions using the app, educreations.  Click on the links below to learn more about adding and subtracting fractions.

 

 

Erin and Cecily http://www.educreations.com/lesson/view/adding-fractions-by-erin-and-cecily/15251643/?ref=link Caitlin and Cooper http://www.educreations.com/lesson/view/subtracting-unlike-problems-using-fractions-by-cai/15139832/?ref=link     Allie and Joshua http://www.educreations.com/lesson/view/subtracting-unlike-fractions-by-allie-and-joshua/15021605/?ref=link     Andrew and Camelia http://www.educreations.com/lesson/view/adding-unlike-fractions-by-andrew-and-camelia/15253000/?ref=link     Kare and Alby http://www.educreations.com/lesson/view/adding-unlike-fractions-by-kate-and-alby/15251855/?ref=link Connor and Caroline http://www.educreations.com/lesson/view/adding-unlike-fractions-by-connor-and-caroline/15251661/?ref=link     Ava and Drew http://www.educreations.com/lesson/view/subtracting-unlike-fractions-by-drew-and-ava/15251598/?ref=link   Alex, Carissa, and Nick http://www.educreations.com/lesson/view/adding-unlike-fractions-by-carissa-nick-alex/15247382/?ref=link  

Gar and Abby

http://www.educreations.com/lesson/view/fractions-by-abby-and-gar/15394972/?ref=link

        Jackie, Charlotte, and Chris http://www.educreations.com/lesson/view/adding-unlike-fractions-by-jackie-charlotte-and-ch/15394870/?ref=link     Charlie and Maya http://www.educreations.com/lesson/view/subtracting-unlike-fractions-by-charlie-and-maya/15247338/?ref=link    

Common Core Standards~ Grade 4

Number & Operations—Fractions ¹

Extend understanding of fraction equivalence and ordering.

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.

Number & Operations—Fractions ¹

Extend understanding of fraction equivalence and ordering.

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 comparisons are valid only when the two fractions refer to the same whole. Record the results of comparisons with symbols >, =, or <, and justify the conclusions, e.g., by using a visual fraction model.