Curated OER
"The Grapes of Math" by Gregg Tang
Students practice mental addition and use the associative and commutative properties of addition to solve problems.
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Comparing Numbers (up to 999)
In this number comparison activity, 4th graders compare 14 pairs of numbers and place either the greater than or less than symbol between each. They order 7 sets of numbers from least or smallest to greatest.
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Incredible Equations - Math Calendar Activity
Students review math facts and create their own math problems using the numbers in the current date. They demonstrate the problems using various manipulatives.
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Addition, Subtraction, Multiplication and Division of Positive and Negative Integers
In this integers worksheet, students solve 36 questions in which positive and negative integers under 50 are added, subtracted, multiplied or divided.
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A Frightening Mix of Math: Add and Subtract
In this mixed operation learning exercise, students solve a total of 36 problems, addition and subtraction. Answers are included on page 2.
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Subtract Positive and Negative Integers
Review the concept of subtracting positive and negative integers. Learners review the rules for subtracting integers, use manipulatives to visualize the process, and complete an assessment.
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Basic Mathematical Operations Using Math Tiles
Practice addition, subtraction, multiplication, and division using tiles as manipulatives. In this math operations lesson, young learners choose the appropriate sized tiles, arrange them according to directions given by the teacher, and...
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Multiplication: A Treasure Hunt to Two and Three Digit by One Digit Multiplication
Here is a math lesson which has learners practice multiplying two and three digit numbers by one digit numbers. They discuss multiplication strategies and use those strategies to play a game.
Illustrative Mathematics
Operations with Rational and Irrational Numbers
Learners complete addition and multiplication tables that include rational and irrational numbers. They also answer a series of questions about the sums and products of irrational and rational numbers. One suggested modification would be...
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Word Problems that Use All Operations
These word problems put your mathematicians' skills to the test. They utilize addition, subtraction, multiplication and division knowledge to solve 10 math scenarios. There's room for them to show work, and these all end up as...
Helping with Math
Subtraction : 3-digit and 2-digit
Does your class need a little extra practice subtracting two-digit subtrahends from three-digit minuends? Here are 30 practice problems just waiting for answers; some problems require regrouping and some do not.
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Matrix Operations
Here is a worksheet to practice or review basic matrix operations of addition, subtraction, and scalar multiplication. First, define and discuss key vocabulary terms, then have individuals work five simple problems. There are detailed...
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Math Magic
Learners work in pairs, and take turns pretending to be a magician. There are a set of instructions for the magician to follow. A penny and a dime are used, and odd and even numbers are employed for multiplying. There is also a nifty...
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Chapter 11 Objective 5.1 Exercises
In this translating learning exercise, middle schoolers read word sentences, translate them to number sentences and solve the equation. This one-page learning exercise contains ten problems.
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Subtraction and Unknown Addends (to 20)
How many more gallons of fuel does Mr. George need to fill his car to capacity? This word problem uses the unknown addend strategy to get scholars subtracting and thinking about the relationship between mathematical...
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Place Value and Transformation
Fourth graders have a class discussion about fraction and negative numbers that were in the coordinates. They plot and read ordered numbered pairs. They transform ordered pairs and explore transformation of figures on a plane.
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Adding and Subtracting Up to 5 Guided Lesson Explanation
A teacher resource, this scripted lesson details how learners can solve addition and subtraction problems involving numbers up to five. The referenced pupil worksheet is not included.
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Math Game Using A Tic-Tac-Toe Board
Elementary schoolers play a math game using a Tic-Tac-Toe Board. This simple idea can be used with virtually any grade level. A team of learners are the "O's," and the other is the team of "X's." Each time a team gets a problem correct,...
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Multiplication And Division of Rational Expressions
There is nothing wrong with good old-fashioned practice. Middle schoolers simplify rational expressions using the operations of multiplication or division. The worksheet included 24 problems and an example to help learners along.
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Liquid Volume and Mass Word Problem
Jeff, Steven, and Donna are ordering juice, and it's up to your scholars to determine how many liters they get all together. There is a visual to help scholars add up these amounts, and everyone orders in single-digit liters. There is an...
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Perfect Squares and Factoring
A teacher guided lesson plan on perfect squares and factoring. They discuss perfect squares, observe the expansion steps for finding the product, and practice solving problems. They complete a worksheet on perfect squares and factoring.
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Does Order Really Matter?
Investigate the order of operations! Learners participate in interactive multi-media activities to examine and solve multi-step equations, inequalities. They evaluate formulas and simplify monomials and polynomials.
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Drop it or not?
Students explore fractions. In this fraction lesson, students play an interactive game and use manipulatives to practice working with fractions.
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Cutting Expenses
Students explore budgeting. In this finance and math lesson, students brainstorm ways in which households could save money. Students view websites that give cost reducing ideas. Students complete an expense comparison chart and use the...