ALEX Lesson Plans
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 handson 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 reallife applicataions to explore, using the Pythagorean Theorem.
Subject: Mathematics (9  12), or Science, Technology, Engineering, and Mathematics (9  12) Title: Land Surveying ProjectEnhancing mathematics in the career/technical classroom and providing relevance in the mathematics classroom.
Description: This project resulted from of the collaboration of a computer aided drafting teacher, Chris Bond, and a math teacher, Lee Cable, (HewittTrussville High School) to provide higher math expectations in CT and real life application in mathematics.
In this handson and technology based project, CT students will learn the basics of civil engineering in land surveying while applying algebraic and geometric concepts. The current technology used by survey crews, for example AutoCAD, will be utilized and applied by students. With assistance from a local civil engineering firm, students will record length and angle measurements of an assigned area and calculate unknown measures using math concepts that include solving general and right triangles, setting up and solving proportions, determining scale, and using the Law of Cosines. A topographical map will then be plotted using AutoCAD and a presentation made to the engineering firm for grading and feedback. The embedded math will be cotaught with a math teacher using the real world data to make the topics relevant. In the math classroom, the math teacher will use land surveying problems designed in this project to show students how math concepts are used in realworld applications.
Subject: Architecture and Construction (9  12), or Mathematics (9  12) Title: The Clock TowerEnhancing mathematics in the career/technical classroom and providing relevance in the mathematics classroom.
Description: This project resulted from the collaboration of a computer aided drafting teacher (preengineering), Chris Bond, and a math teacher, Lee Cable, (HewittTrussville High School) to provide higher math expectations in CT and real life application in mathematics.
As a handson, technology based project this activity demonstrates use of the Pythagorean Theorem, Sine, Cosine and Tangent to find unknown heights of objects and can be adapted for use by the computer aided drafting or mathematics teacher. Clinometers are used as a surveying tool and AutoCAD is used as a drawing tool. Students use a clinometer and a ruler or a tape measure to find and then record the length and angle measurements of a right triangle to determine unknowns. This information is then used to find unknown lengths and angles and to then create a drawing in AutoCAD. Proportion and scale will be used to draw a scale drawing of the clock tower at the new HewittTrussville High School. In the mathematics classroom, students will produce scale drawings using graph paper instead of AutoCAD. This lesson will need to be adapted for use by other schools by selecting a different building structure for measure.
Subject: Mathematics (9  12) Title: Geometric Mean and Indirect Measurement
Description: In this inquirybased 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.
Subject: Mathematics (9  12), or Technology Education (9  12) Title: I Can Determine The Height Of A Rocket!
Description: The lesson is intended to give students a fun realworld experience in applying their math skills. They will use trigonometric ratios to calculate heights of tall structures. They will also use the Internet to convert their calculations from standard to metric units and visa versa.
Subject: Mathematics (9  12) Title: How tall is the school's flagpole?
Description: The purpose of this lesson is to help students apply math concepts concerning similar triangles and trigonometric functions to real life situations. The students learn how to take these concepts and use them to find measurements of objects that they are unable to measure in conventional ways.
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