Professional Learning Podcast Treasury Lesson Plans Personal Workspace Site Search ALEXville Learning Assets Home Courses of Study

Narrow Results:

Lesson Plans (5) A detailed description of the instruction for teaching one or more concepts or skills. Interactives/Games (1) A learning object that requires a user's involvement. Learning Activities (8) Any activity that would enhance a lesson or unit in order to help the learner master an objective 
and/or acquire a skill.  Examples include, but are not limited to, online tutorials, experiments, 
demonstrations, and hands-on activities.
Teacher Tools (2) An extensive set of online resource tools teachers can use to enhance student learning or increase teacher productivity often useful across grade levels and/or subject areas (Aligned to professional learning standards instead of content standards).


ALEX Lesson Plans


Save to ALEX | Share Share | Show Details

Subject: Mathematics (8 - 12)
Title: Proofs into Practice: The Pythagorean Theorem in the Real World
Description: The introduction of this lesson has students verifying the famous Pythagorean Theorem with a hands-on proof. Students will then apply the Theorem in one of two ways: by solving for the side lengths of a right triangle and by determining whether three side lengths could possibly form a right triangle. Finally, students will choose one of two real-life applicataions to explore, using the Pythagorean Theorem.


Save to ALEX | Share Share | Show Details

Subject: Mathematics (9 - 12)
Title: Geometric Mean and Indirect Measurement
Description: In this inquiry-based lesson, students will work in groups to gather measurements needed to approximate the height of a building. Students will discover how geometric mean can be used to find the lengths of missing sides of right triangles.  This lesson plan was created by exemplary Alabama Math Teachers through the AMSTI project.


Thinkfinity Lesson Plans


Save to ALEX | Share Share | Show Details

Subject: Mathematics
Title: Inequalities in Triangles      
Description: In this Illuminations lesson, students use pasta to create models of triangles and non-triangles in order to investigate the relationship between the longest side of the triangle and the sum of the other two sides of the triangle. In addition, students measure the sides and angles of a scalene triangle and investigate the relationship between the location of the largest angle and largest side in a triangle. There are also links to online activity sheets.
Thinkfinity Partner: Illuminations
Grade Span: 9,10,11,12



Save to ALEX | Share Share | Show Details

Subject: Mathematics
Title: Pieces of Proof     
Description: This lesson offers an intermediate step of putting together the statements and reasons to build a formal geometry proof. There is a leap to be made from understanding postulates and theorems in geometry to writing proofs using them. Students are given the parts of the proof and have to put them in a correct order, like a puzzle, rather than starting with a blank page to generate the statements and reasons themselves.
Thinkfinity Partner: Illuminations
Grade Span: 9,10,11,12



Save to ALEX | Share Share | Show Details

Subject: Mathematics
Title: The Triangle Inequality     
Description: In this reproducible activity, from an Illuminations lesson, students investigate how three sides can be arranged to make both triangles and non-triangles.
Thinkfinity Partner: Illuminations
Grade Span: 9,10,11,12



Web Resources


Podcasts


Save to ALEX | Share Share | Show Details
The Pythagorean Theorem TV
http://www.mathtv.co...
This website shows videos to help students and teachers understand the Pythagorean Theorem.

Interactives/Games


Save to ALEX | Share Share | Show Details
Geometry Step-by-Step
http://agutie.homest...
This site provides a mix of sound, science, and Incan history in order to raise students' interest in Euclidean geometry. Visitors will find geometry problems, proofs, quizzes, puzzles, quotations, visual displays, "scientific speculation", and more.

Learning Activities


Save to ALEX | Share Share | Show Details
Geometry Step-by-Step
http://agutie.homest...
This site provides a mix of sound, science, and Incan history in order to raise students' interest in Euclidean geometry. Visitors will find geometry problems, proofs, quizzes, puzzles, quotations, visual displays, "scientific speculation", and more.

Teacher Tools


Save to ALEX | Share Share | Show Details
Geometry Step-by-Step
http://agutie.homest...
This site provides a mix of sound, science, and Incan history in order to raise students' interest in Euclidean geometry. Visitors will find geometry problems, proofs, quizzes, puzzles, quotations, visual displays, "scientific speculation", and more.

Save to ALEX | Share Share | Show Details
The Pythagorean Theorem TV
http://www.mathtv.co...
This website shows videos to help students and teachers understand the Pythagorean Theorem.

Thinkfinity Learning Activities


Save to ALEX | Share Share | Show Details

Subject: Mathematics
Title: IGD: Area of a Triangle      
Description: This student interactive, from Illuminations, helps students understand and investigate how to find the area of a triangle by finding a way to make it look like a simpler shap--one whose area formula is known. Students make a copy of the triangle, and then make a parallelogram using the triangle and its copy. Students then determine that the area of the triangle is one-half that of the parallelogram.
Thinkfinity Partner: Illuminations
Grade Span: 3,4,5,6,7,8



Save to ALEX | Share Share | Show Details

Subject: Mathematics
Title: Half Angle     
Description: This student interactive, from an Illuminations lesson, allows students to find the incenter of a triangle and see a visual explanation of why it occurs where it does.
Thinkfinity Partner: Illuminations
Grade Span: 9,10,11,12



Save to ALEX | Share Share | Show Details

Subject: Mathematics
Title: Isosceles Triangle Investigation      
Description: This student interactive, from an Illuminations lesson, allows students to investigate the relationship between the area of the triangle and the length of its base.
Thinkfinity Partner: Illuminations
Grade Span: 9,10,11,12



Save to ALEX | Share Share | Show Details

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



Save to ALEX | Share Share | Show Details

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



Save to ALEX | Share Share | Show Details

Subject: Mathematics
Title: Triangle Classification     
Description: This student interactive, from an Illuminations lesson, allows students to turn a segment into a right triangle, an isosceles triangle, and an obtuse triangle.
Thinkfinity Partner: Illuminations
Grade Span: 9,10,11,12



Save to ALEX | Share Share | Show Details

Subject: Mathematics
Title: Triangle Island      
Description: This student interactive, from an Illuminations lesson, allows students to explore the distances from an interior point of a polygon to its sides and determine the sum of these distances.
Thinkfinity Partner: Illuminations
Grade Span: 9,10,11,12



Alabama Virtual Library
Alabama Virtual Library

Hosted by Alabama Supercomputer Authority
The University of Alabama at Birmingham
The University of Alabama at Birmingham
The Malone Family Foundation
The Malone Family Foundation
Thinkfinity
Thinkfinity
Best of the Web

Web Design by: Digital Mason LLC