ALEX Lesson Plans
Subject: English Language Arts (9  11), or Mathematics (9  12) Title: From Knotty to Calculating
Description: In this lesson, students will work within their math and English language arts classes to research the development of mathematical tools and their applications. A research paper will be produced for and graded by the English language arts teacher. A presentation will be made in the math class.
Subject: Mathematics (9  12) Title: Slide Into the Past
Description: Students will be introduced to the slide rule through A brief history on its use. They will practice simple calculations (multiplying and finding values of trigonometric, exponential, and logarithmic functions) using a virtual slide rule.
Subject: Mathematics (9  12) Title: Napier's Bones  A Useful Calculation Tool
Description: This lesson deals with John Napier's historical contributions to the field of mathematics. Focus is given to Napier's Bones or Rods. Students will create a set or will use an online interactive set to perform calculations involving multiplication of 2 and 3 digit numbers.
Thinkfinity Lesson Plans
Subject: Mathematics Title: Hospital Locator
Add Bookmark
Description: In this student interactive, from an Illuminations lesson, students act as community planners, trying to place a new medical center equidistant from three cities. Thinkfinity Partner: Illuminations Grade Span: 9,10,11,12
Subject: Mathematics Title: IGD: Angle Bisector
Add Bookmark
Description: This student interactive, from Illuminations, helps students understand and investigate angle bisectors. Students read a definition and then construct an angle bisector using the interactive tool. Finally, students take a closer look at the properties of angle bisectors by answering a set of questions and then checking their answers. Thinkfinity Partner: Illuminations Grade Span: 9,10,11,12
Subject: Mathematics Title: IGD: Euler Line
Add Bookmark
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
Subject: Mathematics Title: IGD: Simson Line
Add Bookmark
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
Subject: Mathematics Title: Reflect on This
Add Bookmark
Description: In this lesson, from Illuminations, students investigate reflections in a plane using mirrors (or other reflective materials) and a geometry utility. They apply their findings to examination of interior angles of regular polygons. Thinkfinity Partner: Illuminations Grade Span: 9,10,11,12
Subject: Mathematics Title: Measuring Shadows
Add Bookmark
Description: In this Science NetLinks lesson, students determine the pattern (length and direction) of shadows cast by sunlight during a several month period. They develop an interpretation of the daily and seasonal patterns and variations observed. Thinkfinity Partner: Science NetLinks Grade Span: 6,7,8
Subject: Mathematics Title: Using a Calculator for Finding the Equation of a Function
Add Bookmark
Description: To determine the function of best fit for a set of data, students should recognize which category of function bests fit the data and know how to use technology to obtain a function. Students will use linear regression to find the best function. This lesson teaches these skills and prepares students for the subsequent lesson(s), in which they will collect their own data. Thinkfinity Partner: Illuminations Grade Span: 9,10,11,12

