Lesson Plans

Lesson 1 - Rendezvous with a Target

Subject: Mathematics/Geometry - Grade Levels: 6-9

Objective

Student will have an understanding of and be able to apply the principle of interception by constant bearing.

Stated: If two objects move each in a straight line at uniform speed and If the bearing (direction) of either object from the other is constant will come together, they will intercept on another.

Materials

• Graph paper
• Protractor
• Compass
• Calculator

Activities/Procedures

Student will read the section of material entitled Interception. They will learn the meaning of "bearing" and state the principle of "interception by constant bearing. They will apply principle by solving the problem.

Problem

Line AB in Fig. 7 represents the eastward course of the Battleship North Carolina traveling at 25 miles per hour, as drawn on graph paper. A Japanese plane leaves the carrier Kaga C when the battleship is at D to intercept it as soon as possible. The Japanese plane flies at ______ miles per hour. In what direction must and where will the plane intercept the battleship?

Assessment

Teacher evaluation to determine if student used the "principle of interception by constant bearing" to derive at correct answers.