Lesson Plan
Curated OER

Reduction to Common Denominator #2

For Teachers 4th - 10th
Elementary and secondary learners compare fractions that have uncommon denominators and add and subtract fractions that have common denominators. They practice reducing fractions and getting denominators to be the same so they can add...
Lesson Plan
Curated OER

Signed Numbers and Order of Operations I

For Teachers 8th - 9th
In this signed numbers worksheet, students simplify equations by using the indicated operation. They add, subtract, multiply, and divide equations containing two to four positive and negative integers. Three of the 25 equations contain...
Lesson Plan
Curated OER

Matrices: A Secret Weapon

For Teachers 9th - 11th
Students perform operations with matrices. In this algebra instructional activity, students use cryptography and cryptanalysis to solve problems. They add, subtract, and multiply matrices.
Lesson Plan
Curated OER

Weather In The World

For Teachers 6th - 7th
Students investigate the weather in different places in the world. In this algebra lesson, students use technology to gain an understanding of how to study integers. They add and subtract integers on a number line.
Lesson Plan
Curated OER

Math Relay

For Teachers 4th
This is really a math review for older elementary learners to practice making equations using adding, subtracting, multiplying, and dividing in a fun way. They get to move around and play with hula hoops, bean bags, balls, and jump...
Lesson Plan
Utah Education Network (UEN)

Subtracting Integers

For Teachers 6th - 8th Standards
Review the concepts of additive inverses and adding positive and negative integers. Relate understanding to the subtraction of integers. This is done with either the use of "Algeblocks" (any square or tile manipulative should do) or...
Lesson Plan
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EngageNY

Adding and Subtracting Expressions with Radicals

For Students 9th - 10th Standards
I can multiply, so why can't I add these radicals? Mathematicians use the distributive property to explain addition of radical expressions. As they learn how to add radicals, they then apply that concept to find the perimeter of...
Lesson Plan
EngageNY

Understanding Subtraction of Integers and Other Rational Numbers

For Teachers 7th Standards
Subtraction is all about opposites, and the fifth activity in a series of 25 introduces the concept of subtracting integers. Pupils connect subtracting with discarding a card in the integer game. They develop the rule for subtracting...
Lesson Plan
National Security Agency

Ordering, Adding and Subtracting Integers

For Teachers 5th - 7th Standards
Prealgebrarians use colored chips, stickers, and pencils to explore the world of integers. They discover absolute value, compare positive and negative integers, and apply operations to them. A detailed procedure for the three-part...
Lesson Plan
Curated OER

Addition and Subtraction of Fractions

For Teachers 3rd - 5th
Students demonstrate how to solve addition and subtraction of fractions. In this fractions instructional activity, students use folded paper to shade in fractional parts and identify the sum of the parts shaded.
Lesson Plan
Lesson This!

Fraction Fruit

For Teachers 3rd - 5th Standards
Discover the concept of fractions by using fruit as a model. Scholars discover fractions are part of a whole, similar to the pieces of fruit which are placed in front of them. They then cut up several different types of fruit and discuss...
Lesson Plan
Curated OER

Money Subtraction (I)

For Teachers 3rd - 4th
In this money subtraction worksheet, students use their math skills to solve 20 problems that require them to subtract Euro amounts in increments of 5 cents.
Lesson Plan
Curated OER

Money Subtraction (F)

For Teachers 3rd - 5th
In this money subtraction worksheet, students use their math skills to solve 20 problems that require them to subtract Euro amounts in 2 cent increments.
Lesson Plan
Curated OER

Get it Straight Mr. Decimal!

For Teachers 3rd - 5th
Students work with decimals. In this decimal lesson, students participate in a hands-on group activity that enable them to review to how to appropriately add and subtract decimals.
Lesson Plan
Curated OER

Computation with Fractions

For Teachers 4th - 6th
Upper graders are introduced to the topic of fractions and percentages. In groups, they discuss real world situations in which fractions are present, and they complete a worksheet solving problems with common and uncommon denominators....
Lesson Plan
Curated OER

Real World Math: Unexpected Events

For Teachers 5th - 8th
Ready to delve into personal finance? Learners discover how to organize a check book register. They practice debits and credits in a math game involving the register they set up. While they gain valuable practical knowledge, they also...
Lesson Plan
Curated OER

Subtracting Integers: Math, Physical Education, Dancing, Negative Numbers

For Teachers 6th - 8th
Students demonstrate their understanding of positive and negative integers by adding and subtracting. More importantly, students explain why a negative number, subtracted from a negative number, changes the operation.
Lesson Plan
Curated OER

Review of Adding and Subtracting Integers

For Teachers 8th
Eighth graders review adding and subtracting of integers. The class makes a number line from -10 to 10 and practice adding and subtracting by "acting out" the math problems. Students play a card game using the number cards from a regular...
Lesson Plan
Curated OER

Add & Subtract Fractions w/Unlike Denominators, 2

For Teachers 7th - 9th
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.
Lesson Plan
Curated OER

Subtracting Using Estimation

For Teachers 3rd
Third graders play the game, "Who Wants To Be A Millionaire?" while subtracting using estimation. I really like the format of this fun game, which utilizes the lifelines and strategies found in the real game on television.
Lesson Plan
Curated OER

Subtracting with Regrouping

For Teachers 2nd
Second graders explore math functions by completing a worksheet in class. In this subtraction lesson, 2nd graders identify the techniques used to assist in subtracting multi-digit numbers. Students complete a subtraction worksheet and...
Lesson Plan
Curated OER

Using Symbols to Subtract

For Teachers 1st
In this mathematics worksheet, 1st graders use symbols to subtract. They identify various symbols used when subtracting and explain why they may be used.
Lesson Plan
Curated OER

Adding and Subtracting With Negative Numbers

For Teachers 5th
Fifth graders access prior knowledge of calculating using a number line. In this adding and subtracting with negative numbers lesson, 5th graders use a number line to solve math problems.
Lesson Plan
Curated OER

Adding and Subtracting forty-Four Rational Expressions with Unlike Denominators

For Teachers 11th - Higher Ed
In this adding and subtracting rational expressions worksheet, students perform the indicated operations and simplify forty-four expressions.  These problems involve unlike denominators.

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