Illustrative Mathematics
Illustrative Mathematics: 4.nf Comparing Sums of Unit Fractions
The purpose of this task is to help develop students' understanding of addition of fractions; it is intended as an instructional task. Aligns with 4.NF.B.3.a.
BBC
Bbc Skillswise: Percent and Fractions: Comparing Fractions and Percentages
Learn about the relationship between fractions, decimals and percentage.
Khan Academy
Khan Academy: Units
In this exercise, students solve word problems that involve using different units. Students receive immediate feedback and have the opportunity to get hints and try questions repeatedly.
National Council of Teachers of Mathematics
The Math Forum: Ask Dr. Math: Comparing Ratios and Fractions
Dr. Math helps a student see the connection between fractions and ratios using the names of Flintstone characters. A clever approach that requires an understanding of basic algebra concepts.
The Math League
The Math League: Decimals, Whole Numbers and Exponents
This tutorial has definitions and examples of decimals, whole numbers, and exponents. In addition, a variety of topics are covered, such as comparing, multiplying and subtracting.
Texas Instruments
Texas Instruments: Smart Shoppers
In this activity, students will compare ratios with different denominators, and then with common denominators. They will also find unit rates.
CK-12 Foundation
Ck 12: Math Grade 4
Browse resources related to fourth-grade math standards. Click on a topic for interactive lessons, videos, and extra practice.
National Council of Teachers of Mathematics
Nctm: Figure This: Math Challenges for Families
Students, teachers, and parents alike will enjoy this challenging math site. It contains a clever brain teaser section plus creative problems related to algebra, geometry, measurement, numbers, statistics, and probability. A Spanish...