Curated OER
Area of Triangle using the Semi-Perimeter and Radius
Students investigate the properties of circles. In this geometry lesson, students calculate the area and perimeter of a triangle. They identify the perimeter and radius length of a circle.
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Inscribed Right Triangles
Learners calculate the measurements of the inscribed angles of a triangle. For this geometry lesson, students relate the hypotenuse of a right triangle and the diameter of a circle to each other. They calculate the diameter of a circle...
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Triangle Side Lengths and Angles Measures
Students identify missing sides and angles. In this geometry lesson, students use triangular theorems to identify the missing sides. They use the Pythagorean Theorem to find the different ratios of each side.
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Inscribed Quadrilaterals and Parallelograms
Students differentiate between inscribed quadrilaterals and parallelograms. In this geometry lesson, students identify the shaped of the polygons when it is inscribed inside of a circle. They calculate the missing angles of the inscribed...
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Investigating Trigonometric Ratios Through Similar Right Triangles.
49Students investigate the properties of right triangles. In this geometry lesson, students differentiate between similar and congruent triangles. They use the Pythagorean Theorem to find the missing angles and sides.
Curated OER
Investigating Trigonometric Ratios Through Similar Right Triangles
Students identify similar and congruent right triangles. In this geometry lesson, students use trigonometric ratios to identify missing sides and angles of a triangle. They differentiate similar and congruent triangles.
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Robot Cartography
Students identify points plotted on the coordinate plane. In this geometry lesson, students learn to read a map using concepts of a coordinate plane grid. They find the path given a map to tell them where to go.
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Marshmallow Towers
Students explore geometry by completing a marshmallow activity in class. For this architecture lesson, students identify the jobs of civil engineers and architects while identifying different geometric shapes as well. Students utilize...
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Integers
Students perform order of operation using integers. In this algebra lesson, students apply properties of integers as they add, subtract, multiply and divide integers. They work in groups to complete a RAFT assignment.
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Design a Zoo Project
Students research animals to become experts on them. They design a zoo to fit their animal's climate and region. They create a computer drawing of their zoo at the end of the lesson.
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Iowa - Here We Come
Students practice their geography skills. In this geography activity, students plan a trip in their state that includes calculating mileage, time, and other costs. Students also submit a written trip itinerary.
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The Berenstain Bears' Mad, Mad, Mad Toy Craze
Pupils explore personal finances. In this money management lesson, students read The Berenstain Bears' Mad, Mad, Mad Toy Craze. Pupils examine the spending habits of Brother Bear and Sister Bear. Students analyze opportunity costs as well.
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Division Day 1
Students complete division problems where they solve problems based on the story The Doorbell Rang. In this division lesson plan, students also write journal entries about division.
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Heron's Formula
Learners use Heron's formula to calculate the area of a triangle. In this geometry lesson, students use three different methods to solve the area of a triangle. They find and construct the incentor and angle bisector of a triangle.
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Special Right Triangles
Students identify different types of special right triangles. In this geometry lesson, students differentiate between right triangles and isosceles triangles. they construct the triangles using geometry software and make conjectures...
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Compound Locus
Students investigate circles and compound locus. In this geometry lesson, students identify the distance from a point to a line. They use Cabri software to create lines and circles.
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Conic Sections and Locii
Students differentiate between ellipse and hyperbola. In this algebra lesson, students graph and solve elliptical equations. They use the cabri program to create the different conics and move them around.
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Colors Samples
In this math worksheet, students take the time to count out the colors of the candies. They graph the results and make inferences from the information.
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Expressions of Appalachian Mountain Folk
In this math worksheet, learners plot the coordinates and then unscramble a code in order to decipher a riddle about the expressions used in the Appalachian Mountains.
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Finding the LCM
Young scholars explore the concept of finding the least common multiple of two numbers.  In this least common multiple lesson, students find the least common multiple of two numbers.
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Bingo Brown and the Language of Love
Learners study credit and interest in a novel and consumer math activity. In this credit lesson, students read the book Bingo Brown and the Language of Love. Learners discuss the book and the ideas of credit, interest, and loans....
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Constructing Parallel Lines
Learners construct parallel lines using a protractor and a straightedge. In this geometry activity, students identify the properties of parallel lines. They use Cabri to graph and observe the lines.
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Incenter of a Triangle
Tenth graders find the incenter of a triangle. In this geometry lesson, 10th graders define the way to create an incenter with an angle bisector. They differentiate between incenter and incircle.
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Orthocenter Of a Triangle
Students find the orthocenter of a triangle. In this geometry lesson, students identify where the altitudes meet in a triangle. They use Cabri software to explore acute, obtuse and right triangles.
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
