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Incenter of a Triangle

For Teachers 10th
Tenth graders explore the properties of the incenter of a triangle. In this geometry lesson, 10th graders construct a triangle and the angle bisectors of each angle. The dynamic properties of Cabri Jr. allow students to locate and...
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Multiplicative and Additive Identity

For Teachers 6th - 8th
Students explore the identity properties of multiplication and of addition. They answer riddles that have to do with the identity properties and observe the teacher explanation of each property as they are modeled on the board. ...
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Cookie Mining

For Teachers 4th - 8th
Young scholars investigate mining and economics. In this mining lesson, students play a game in which they purchase property, mine the property, and pay for reclamation.  Young scholars earn money for each ore mined. 
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Identifying and Describing Polygons

For Teachers 8th - 10th
Students identify the different properties of polygons. In this geometry lesson, students differentiate between polygons and non-polygons. They review important vocabulary to help them understand the properties of polygons.
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Let's Find Out About Money

For Teachers 1st
First graders identify coins (pennies, nickels, dimes and quarters), and their attributes, including physical characteristics and value.
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Paragraph Proofs

For Teachers 9th - 12th
Young scholars explore the concept of paragraph proofs. In this paragraph proofs instructional activity, students make flow charts of the process of getting ready for school. Young scholars convert the flow chart to a paragraph proof....
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Discovering Density

For Teachers 9th - 10th
Students explore the physical properties of density. In this hands-on lesson, students calculate density and distinguish between intensive and extensive properties.
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Lines In Geometry

For Teachers 8th - 10th
Students define important vocabulary words using a dictionary. In this geometry lesson plan, students identify and use properties of triangles to solve problems. They identify the median. altitude and angles as well as properties of...
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The Quadratic Formula

For Teachers 7th - 10th
Students solve quadratic function by completing the square. In this algebra lesson, students use the quadratic formula to factor quadratics and find the roots. They graph the parabola and identify its properties.
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Congruence with Robot Gobot

For Teachers 8th - 10th
Students identify the properties of solids and polygons. In this geometry instructional activity, students identify the different measurements of a triangle. They use congruence parts and theorem to prove their answer.
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Quadrilateral Bunny

For Teachers 9th - 11th
Learners identify the properties representing quadrilateral. In this geometry lesson plan, students differentiate between special and regular quadrilaterals. They discuss and demonstrate hierarchy of quadrilaterals.
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Classifying Polygons

For Teachers 1st - 3rd
Students study polygons. In this math lesson, students play a game in which they learn the classification system for polygons. Students identify the properties of quadrilaterals.
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Multiplying Polynomials

For Teachers 9th - 10th
In this multiplying polynomials worksheet, students multiply polynomials by a single term. This two-page worksheet contains examples, followed by ten problems.
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Geometry: Classifying Quadrilaterals

For Teachers 6th - 12th
Students use construction technology to identify and find relationships between the attributes of various quadrilaterals. They make and test conjectures about the distinguishing properties of parallelograms, rectangles, rhombuses,...
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Concurrent Lines in Triangles

For Teachers 9th - 12th
Learners explore the concept of concurrent lines in triangles. In this concurrent lines in triangles lesson, students work in groups to investigate properties of concurrent lines in acute, right, and obtuse triangles. Learners use a...
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Geometry, Measurement & Reasoning

For Teachers 9th - 11th
Students construct two-column proofs. In this geometry instructional activity, students use deductive reasoning and geometric properties to justify given geometric statements. Students compare and contrast proofs.
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Solve algebraic proportions.

For Teachers 8th - 10th
Students solve algebraic proportions. In this algebra instructional activity, students convert between fractions, percents and decimals. They solve problems using the distributive property.
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Quadrilateral Review

For Teachers 8th - 10th
Students identify the properties of quadrilaterals. In this geometry lesson, students investigate the history of quadrilaterals and different types of quadrilaterals. They identify the length and mid-segment of each shape.
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Do it With Dominoes

For Teachers K - 2nd
Students explore modes for addition.  In this K-2 mathematics lesson, students investigate the four models of addition (counting, sets, number line, and balanced equations) using dominoes.  Students examine the relationship...
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"The Greedy Triangle" by Marilyn Burns

For Teachers 4th - 6th
Pupils review angles, sides, and properties of basic shapes. Using a geoboard, they make as many different tirangles as possible.
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Multi-Digit Multiplication

For Teachers 4th
Fourth graders practice mastering the ability to multiply multi-digit numbers utilizing rectangular arrays and a variety of mental math strategies. They model and illustrate meanings of multiplication and division of whole numbers and...
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Types of Things

For Teachers K
Students explore the differences between man-made and natural objects. In this activity designed to compare properties of objects, students differentiate between natural and man-made objects and complete an activity designed to show what...
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100 Stamps for 100 Days

For Teachers K
Students recognize similarities and generalize patterns. In this math and technology lesson plan, students develop an understanding of number patterning by grouping stamps and counting by 10s.
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Using Objects to Object to Objectification

For Teachers 7th - 9th
Students use math functions in part to complete a metaphorical activity on tolerance. In this math and tolerance activity, students receive rows of functions and try to find a single simple shared property without success. Students then...

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