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...
Curated OER
Fractions: Addition and Subtraction
Seventh graders add and subtract fractions with like and unlike denominators. After discussing the use of fractions in the real world, 7th graders work problems and draw models representing each problem. They observe subtracting...
Curated OER
Adding Fractions with Unlike Denominators
Students view groups of pickles and discuss putting the groups together. Next, they discuss a group of pickles and cucumbers, can these be put together? Students listen as the teacher explains equivalent fractions and ways to change...
Curated OER
Adding Fractions with Unlike Denominators
Young scholars practice solving addition problems of fractions with unlike denominators and discover how to apply the lowest common multiple to solve problems. After completing practice problems, they review least common multiple and...
Curated OER
Add & Subtract Fractions w/Unlike Denominators, 2
Students use several examples to create a method for adding and subtracting fractions with unlike denominators. They present these methods to the class and then practice applying methods to sample problems.
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Subtracting Fractions
Students investigate the concept of subtracting fractions. They use a variety of problems in order to practice new skills. The independent practice is used to obtain an informal measurement of mastery with the use of a formal quiz for a...
Curated OER
Adding And Subtracting Fractions
Fifth graders practice adding and subtracting fractions in this Math lesson for the fifth grade classroom. The lesson uses a word problem involving snack food ingredients that is sure to please any hungry student. State standards for...
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Reduction to Common Denominator
Students compare two fractions with different denominators. In this fractions lesson, students find the least common multiple in order to find a common denominator with two fractions. Once they have a common denominator, they compare the...
Curated OER
Cornbread Addition
Fourth graders, after being given a box of cornbread mix, follow the directions to make the cornbread. They utilize measuring cups to mix all the ingredients together and incorporate adding simple fractions while mixing up the cornbread.
Curated OER
Mathematics: Domino Theory
Sixth graders use dominos and plastic chips to study common denominators and fractions. They describe how these operations are related to each other.
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Plotting Numbers and Test
Sixth graders create a human number line. They determine the correct placement of various numbers ranging from -4 to 4. Additionally, they will determine the placement of numbers written as fractions and/or decimals.
Curated OER
Accelerated Arithmetic-- Find the Lowest Common Denominator
For this math worksheet, students solve 12 problems in which simple fractions with unlike denominators are added. Examples are in a horizontal format with ample room to rewrite with common denominators.
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Unifying Unlike Denominators
Students play roll of fictional radio disk jockeys. They allocate their daily program time into fractional time slots for the playing of specified catagories of music and commercial advertisements.
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Constructing My Sundae
Eighth graders investigate concepts related to fractions. This includes adding, subtracting, and reducing. There is a creative worksheet that has them creating their own ice cream sundaes using fractions.
Curated OER
Decimals: Collaborative Lesson
Students explore mathematics by participating in a group activity. In this number value lesson, students identify the uses for decimals and how to best estimate whole numbers based on decimals and fractions. Students collaborate with...
Curated OER
Math: Am I Prime?
Seventh graders determine the difference between prime and composite numbers. On a Website, they discover a method to identify all the prime numbers up to 100 and also complete several online activities. Once they have discussed the...
Illustrative Mathematics
Illustrative Mathematics: Egyptian Fractions
One goal of this task is to help students develop comfort and ease with adding fractions with unlike denominators. Another goal is to help them develop fraction number sense by having students decompose fractions. Aligns with 5.NF.A.1.
Illustrative Mathematics
Illustrative Mathematics: Mixed Numbers With Unlike Denominators
The purpose of this task is to help students realize there are different ways to add mixed numbers and is most appropriate for use in an instructional setting. The two primary ways one can expect students to add are converting the 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.
Student Achievement Partners
Nctm: Sharing Chocolate [Pdf]
In this lesson, students use chocolate bars to explore adding fractions with unlike denominators.
Illustrative Mathematics
Illustrative Mathematics: Salad Dressing
The purpose of this task is to have learners add fractions with unlike denominators and divide a unit fraction by a whole number. This accessible real-life context provides students with an opportunity to apply their understanding of...