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Lesson Plans (3) A detailed description of the instruction for teaching one or more concepts or skills. Interactives/Games (2) A learning object that requires a user's involvement. Learning Activities (2) 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 (1) 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


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Subject: Mathematics (9 - 12)
Title: Arc Lengths and Sector Areas
Description: Students will work in cooperative groups to discover the relationships between arc length, central angle measure, and circumference.  They will also discover the relationship between circle area, central angle measures, and sector area.  Students will share their discoveries and create formulas for calculating arc length and sector area.  Then they will practice these skills in a journal entry and solving a real-life extension. This lesson plan was created by exemplary Alabama Math Teachers through the AMSTI project.


Thinkfinity Lesson Plans


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Subject: Mathematics
Title: Soda Cans     
Description: This reproducible activity sheet, from an Illuminations lesson, guides students through a simulation in which they try different arrangements to make the most efficient use of space and thus pack the most soda cans into a rectangular packing box.
Thinkfinity Partner: Illuminations
Grade Span: 9,10,11,12



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Subject: Mathematics
Title: Circle Packing and Curvature     
Description: In this lesson, one of a three-part unit from Illuminations, students investigate the curvature of circles. Students apply definitions and theorems regarding curvature to solve circle problems. In addition, there are links to an online activity sheet and other related resources.
Thinkfinity Partner: Illuminations
Grade Span: 9,10,11,12



Web Resources


Interactives/Games


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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.

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Geometry Pad App
https://itunes.apple...
Create geometric shapes, explore/change their properties, and calculate metrics.

Learning Activities


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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.

Thinkfinity Learning Activities


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Subject: Mathematics
Title: Soccer Problem     
Description: This student interactive, from an Illuminations lesson, allows students to investigate a soccer problem by changing the location of a soccer player as well as the distance between the player and the goal posts. The angle changes as the player is moved, and students must therefore determine the player s position so that the angle is maximized.
Thinkfinity Partner: Illuminations
Grade Span: 9,10,11,12



Alabama Virtual Library
Alabama Virtual Library

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The University of Alabama at Birmingham
The University of Alabama at Birmingham
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The Malone Family Foundation
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