Kansas State Fair
4th Grade Math
Extend students understanding of fractions. State Standards for Math 4.NF.5: Express a fraction with denominator of 10 as an equivalent fraction with a denominator of 100.
Materials: Paper and pencil.
Write a fraction representing the number of white rabbits out of a group of 10. Express the equivalent fraction if there had been 100 rabbit in the group.
During your Kansas State Fair field trip, visit the Rabbit Barn (see fairgrounds map for building location). Take a few moments to walk around the barn and view all the different rabbits. Have each student pick a group of 10 rabbits and write a fraction expressing how many white rabbits there are out of those 10 in their group. Then ask the students to write an equivalent fraction based on 100 rabbits.
Domain: Numbers and Operations – Fractions (4.NF.5)
Cluster: Understand decimal notation for fractions, and compare decimal fractions.
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. For example, express 3/10 as 30/100, and add 3/10 + 4/100 = 34/100.
1. Grade 4 expectations in this domain are limited to fractions with denominators 2, 3, 4, 5, 6, 8, 10, 12, 100. Students who can generate equivalent fractions can develop strategies for adding fractions with unlike denominators in general. But addition and subtraction with unlike denominators in general is not a requirement at this grade.
List and Define the Key Concepts: (noun) fraction, denominator, equivalent fraction
List and Define the Learning Target: (verb) express, use, add, understand, compare
Bloom’s Thinking Level: Remember Understand Apply Analyze Evaluate Create
Webb’s Depth of Knowledge: Level 1(Recall)
Learning Targets: What are the knowledge, reasoning, performance skills, and products that underpin the standard?
Knowledge Target (Know It): I can make equivalent fractions.
Reasoning Target (Mental Process – Use It): Use knowledge of renaming tenths to hundredths to add two fractions with denominators 10 and 100.
Make sense of problems and persevere in solving them.
Reason abstractly and quantitatively
Model with mathematics
Attend to precision