Curated OER
BREAD IN A BAG
If possible, acquire a handful of wheat kernels from a local farmer or seed dealer. Hand them out so students can feel them and see what they look like. Share background information. 2. Draw a wheat kernel on the chalkboard, or use the...
Curated OER
Smarties Investigation
In this math worksheet, students participate in an investigation of Smarties candy. For example, students estimate how many candies they have in each color, count the actual number, and record the information in a tally chart.
Pennsylvania Department of Education
Adding Common Fractions
Fourth graders estimate various measurements. In this lesson on measurement, 4th graders estimate the length and mass of multiple objects. Students discuss the difference between a guess and a reasonable estimate and discuss using...
Khan Academy
Khan Academy: Add and Subtract Mixed Numbers 2 (With Regrouping)
Practice adding and subtracting mixed numbers with common (like) denominators. Some items require regrouping. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
Khan Academy
Khan Academy: Add and Subtract Mixed Numbers With Unlike Denominators 2
Practice adding and subtracting mixed numbers with different denominators. Regrouping required. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
Khan Academy
Khan Academy: Add and Subtract Mixed Numbers (No Regrouping)
Practice adding and subtracting mixed numbers.
Khan Academy
Khan Academy: Add and Subtract Mixed Numbers (No Regrouping)
Practice adding and subtracting mixed numbers with common (like) denominators. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
Khan Academy
Khan Academy: Add/ Subtract Mixed Numbers W Unlike Denominators (No Regrouping)
Practice adding and subtracting mixed numbers with different denominators. No regrouping required.
Khan Academy
Khan Academy: Add and Subtract Mixed Numbers With Unlike Denominators 1
Practice adding and subtracting mixed numbers with different denominators. No regrouping required. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
Khan Academy
Khan Academy: Add & Subtract Mixed Numbers With Unlike Denominators (Regrouping)
Practice adding and subtracting mixed numbers with different denominators. Regrouping required.
Khan Academy
Khan Academy: Add and Subtract Mixed Numbers (With Regrouping)
Practice adding and subtracting mixed numbers with common (like) denominators. Items require regrouping (borrowing).
Khan Academy
Khan Academy: Add and Subtract Mixed Numbers (No Regrouping)
Practice adding and subtracting mixed numbers with common (like) denominators.
Khan Academy
Khan Academy: Add and Subtract Mixed Numbers Word Problems (Like Denominators)
Solve addition and subtraction word problems involving fractions and mixed numbers. Fractions and mixed numbers have common denominators.
Khan Academy
Khan Academy: Adding and Subtracting Mixed Numbers With Unlike Denominators 2
In this exercise, students practice using visuals to add and subtract fractions with unlike denominators. Students receive immediate feedback and have the opportunity to get hints and try questions repeatedly.
Cool Math
Coolmath: Coolmath4kids: Adding and Subtracting Fractions With Whole and Mixed Numbers
Short tutorial explaining how to add and subtract fractions, whole numbers, and mixed numbers. Includes example problems to try.
CK-12 Foundation
Ck 12: Arithmetic: Estimation of Sums of Mixed Numbers and Fractions
[Free Registration/Login may be required to access all resource tools.] Estimate sums of fractions and mixed numbers
Calculator Soup
Calculator Soup: Mixed Numbers Calculator
Do math calculations with mixed numbers (mixed fractions) performing operations on fractions, whole numbers, integers, mixed numbers, mixed fractions, and improper fractions. This calculator can add, subtract, multiply and divide mixed...
Other
Nearpod: Adding & Subtracting: Unlike Denominators
In this lesson, 5th graders will learn how to add and subtract fractions and mixed numbers using models and by finding common denominators.
Lawrence Hall of Science
The Math Page: Skill in Arithmetic: Add and Subtract Fractions
This Math Page tutorial explains how to add and subtract fractions and features a practice section at the very end of the lesson.
Khan Academy
Khan Academy: Subtracting Fractions With Unlike Denominators
Practice subtracting fractions that have different denominators. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
CK-12 Foundation
Ck 12: Arithmetic: Estimation With Mixed Number/fraction Subtraction
[Free Registration/Login may be required to access all resource tools.] Estimate differences of fractions and mixed numbers
CK-12 Foundation
Ck 12: Arithmetic: Estimation of Whole Number
[Free Registration/Login may be required to access all resource tools.] Round whole numbers in order to estimate sums and differences.
Intel Corporation
Intel: Fractions Made Visual
Students learn the importance of math accuracy and, more specifically, that knowing how to add, subtract, multiply, and divide fractions make life easier for everyone. To help students come to this understanding, they are assigned to a...
CK-12 Foundation
Ck 12: Elem Math: Mixed Operations Selecting the Correct Sentence
[Free Registration/Login may be required to access all resource tools.] The video shows how to add and subtract three digit numbers to determine which number sentence matches the correct solution. The video is followed by a series of...