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Lesson Plans (2) A detailed description of the instruction for teaching one or more concepts or skills.


ALEX Lesson Plans  
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Subject: Mathematics (9 - 12)
Title: Investigation of Special Segments of Triangles
Description: This lesson will enable students to investigate three special segments of triangles in a very concrete way. The students will fold paper triangles to create the segments. This lesson would be a great way for students to explore the properties of the segments and their intersections.


Thinkfinity Lesson Plans  
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Subject: Mathematics
Title: Triangle Classification     
Description: This transparency, from an Illuminations lesson, asks students to identify all points that create right, obtuse, isosceles, acute, scalene and equilateral triangles when given an AB segment.
Thinkfinity Partner: Illuminations
Grade Span: 9,10,11,12



Thinkfinity Learning Activities  
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Subject: Mathematics
Title: IGD: Euler Line     
Description: This student interactive, from Illuminations, helps students understand and investigate Euler lines. Students read a definition and then construct the Euler line of a triangle using the interactive tool. They learn that the Euler line involves three points associated with triangles: the circumcenter, orthocenter, and centroid.
Thinkfinity Partner: Illuminations
Grade Span: 9,10,11,12



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Subject: Mathematics
Title: IGD: Median     
Description: This student interactive, from Illuminations, helps students understand and investigate the median of a triangle. Students read a definition and then use the interactive tool to manipulate and explore the properties of triangle medians by changing the shape of a triangle.
Thinkfinity Partner: Illuminations
Grade Span: 9,10,11,12



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Subject: Mathematics
Title: IGD: Simson Line     
Description: This student interactive, from Illuminations, helps students understand and investigate a triangle s Simson line, which is the line passing through the feet of the perpendiculars dropped from P to the three sides of a triangle. Students construct the Simson line for a given triangle using the interactive applet.
Thinkfinity Partner: Illuminations
Grade Span: 9,10,11,12