Nicholas Spry
EDU 105
Introduction to Contemporary Education
What’s Babe’s line?
This lesson will help students find the equation of a line given two or more points. The lesson will engage
the
students, produce an understanding of ‘real world’ linear data, and require students to accurately determine the linear
function that describes such data.
Professional Standards Addressed:
•
Number and Operations
o
understand numbers, ways of representing numbers, relationships among numbers, and number systems
o
understand meanings of operations and how they relate to one another
o
compute fluently and make reasonable estimates
•
Communication
o
organize and consolidate their mathematical thinking though communication
o
communicate their mathematical thinking coherently and clearly to peers, teachers, and others
o
analyze and evaluate the mathematical thinking and strategies of others
•
Connections
o
recognize and use connections among mathematical ideas
o
understand how mathematical ideas interconnect and build on one another to produce a coherent
whole
Objectives:
At the completion of this lesson, students should be able to:
•
Find the slope of a line given two points
•
Find the equation of a line given the slope and a point
•
Find the equation of a line given two points
Instructional Protocol:
The lesson will begin with the problem of Mr. Lopez’s baseball card. Students will not know how to solve the problem at
the beginning of class. Introduce the students to finding the slope of a line if given two points. Use the guided notes and
have the class split into groups to find the slopes of the four sets of points. Go from group to group to make sure each
student understands the concept. Give bonus points to first group to correctly get all four slopes. Following the guided
notes go back to the original problem and solve for the slope of the line. Proceed with the notes and show students how to
find the equation of a line, knowing the slope and a point. Keep students in groups and again have them compete for a
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 Spring '08
 HOWARD
 heart rate, Baseball card, baseball cards, Mr. Lopez

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