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Lesson Plan
Curated OER

Mathematics: One Hundred Plastic Ants

For Teachers 3rd
Third graders pick up plastic ants scattered on the floor. They take them back to their desks, count them, and add their totals to those of other students.
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Lesson Plan
Curated OER

Mathematics: Prime and Composite Numbers

For Teachers 6th
Sixth graders explore how to apply the commutative property and the rules of divisibility. They examine the difference between prime and composite numbers.
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Lesson Plan
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Unequal Groups vs. Equal Groups

For Teachers 3rd
Third graders read and discuss math story problems and analyze if the story is using equal groups or unequal groups. They listen to the book "12 Ways To Get to 11," and simulate the story using beads on a pipe cleaner. Students then...
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Worksheet
Curated OER

Newton's Cows

For Students 9th - 12th
In this secondary mathematics instructional activity, students solve a problem attributed to Sir Isaac Newton in which they determine the number of cows that will eat all the grass on six acres of land in six weeks.  The one page...
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Lesson Plan
Curated OER

The Secret of the Crystal Ball

For Teachers 8th
Eighth graders use mathematical expressions to solve problems.  In this basic properties of operations, 8th graders use prior knowledge and logical reasoning to solve equations. Students analyze an equation by solving a trick problem to...
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Lesson Plan
Curated OER

How many edges do I need to cut in order to open a cube?

For Teachers 2nd - 4th
Learners problem solve to open a cube to create different shapes. In this problem solving lesson plan, students are given a cube and the shapes to open it up to, and they have to cut the cube open to make certain shapes. This gives them...
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Lesson Plan
Curated OER

The Big Hand Challenge

For Teachers K
Students utilize a computer spreadsheet to record and analyze data. In this problem solving instructional activity, students compare their hand size to that of the principal. Students understand standard and nonstandard measurement.
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Worksheet
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Calculator

For Students 4th
In this mathematical calculations worksheet, 4th graders complete 12 multiplication problems by using a calculator. Students also develop an estimate for these problems.
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Lesson Plan
Curated OER

Area Model of Multiplication

For Teachers 4th - 5th
Fifth graders build area models to represent multi-digit multiplication. This lesson is not complete, but having pupils learn first through hands-on experiences builds a solid mathematical foundation.
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Lesson Plan
Curated OER

Property Posters

For Teachers 4th - 6th
Students identity properties of addition and multiplication. For this addition and subtraction properties lesson, students explore commutative, associative, and distributive properties as they design posters that feature the properties...
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Lesson Plan
Curated OER

Fantastic Fractions

For Teachers 4th
Fourth graders explore and examine through hands-on experience and reasoning the concept of fractions. They solve problems involving multiplication and division of whole numbers and addition and subtraction of simple fractions and decimals.
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Lesson Plan
Curated OER

Sports Math

For Teachers 5th
Fifth graders participate in a variety of sports related problem solving equations that involve fractions, decimals and percents. They explain the relationships and equivalences among integers, fractions, decimals and percents with a...
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Lesson Plan
Curated OER

Patterns in the Sums of Polygon Angles

For Teachers 6th
Sixth graders discover the patterns of sums of polygon angles. In this math lesson, 6th graders study the properties of geometric shapes to solve problems as they participate in hands-on activities.
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Lesson Plan
Curated OER

Balance or Tilt?

For Teachers 6th
Sixth graders investigate the concepts of a variable, constant, expressions, and equations. They solve problems which require the interpretation of expressions in and out of equations looking for solutions. Students also use a balance...
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Lesson Plan
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Messy Cookies

For Teachers 4th
Fourth graders explain the idea of a missing factor in an equation. They recognize, represent and solve mathematical situations using patterns and symbols.
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Lesson Plan
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Flexible Fractions

For Teachers 5th
Fifth graders practice solving problems involving fractions.
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Lesson Plan
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Does the Area of the Quadrilateral Change?

For Teachers 7th
Seventh graders complete activities to further their understanding of area formulas. In this area lesson, 7th graders watch as the teacher uses Polystrips to model parallelograms. Students find the area of a rectangle and answer...
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Lesson Plan
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Thinking Like An Engineer

For Teachers 9th - 12th
Students explore physics. They investigate the strategies used by an engineer to solve a problem. Students construct various models to solve the problem. They display their solutions and explain how they solved the problem.
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Lesson Plan
Curated OER

Opening A Cube

For Teachers 5th
Fifth graders investigate mathematical concepts related to the construction of a three dimensional cube. They construct the cube from two dimensional patterns and compute the surface area. Students also define the faces, edges, and...
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Interactive
Curated OER

Order of Operations--Addition, Subtraction, Multiplication & Division

For Students 4th - 5th
For this interactive mathematical computation worksheet, students solve 12 problems by using the order of operations. Students type their answers into the text box.
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Lesson Plan
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The Amazing Mathematical Race: Boxing the Rare Element

For Teachers 6th - 8th
Students enter a race against time to determine the maximum sized box that can be formed from a standard sheet of copy paper. The boxes are to be used to contain a valuable and rare element which is light as cotton and corrosive to all...
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Interactive
Curated OER

Simplify expressions and Combine Like Terms

For Students 7th - 10th
Students will use the distributive property to simply expressions by removing parentheses from the expression. Like terms will then be combined to completely simplify the expression.
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Lesson Plan
Curated OER

Drawing Conclusions

For Teachers 6th - 8th
Students play a probability game, then design and complete a probability problem concerning changing odds.
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Interactive
Curated OER

Simplify Expressions using Distributive Property

For Students 9th - 12th
In this online math worksheet, students simplify expressions by using the Distributive Property. This excellent resource allows the students to check their answers, and to get "hints" should they run into difficulties. A terrific...