- Use the diagram on page 65 of the text. This will be Figure01.08.01.
- Here is an expansion on the earlier problem.
- Students can work in groups on this problem.
- The fire has begun to spread. It had spread to a tent that is fifty feet north of her tent. It has also spread to
additional tent that is twenty- five miles south of the river and fifty feet south of the original tent. Two other
campers have begun helping with the fire problem. How can all three minimize their distances? What is the
shortest distance any one of them can run to put out the fire?
III.MeetingObjectives
- Be sure that the students have completed the work in problem 7 of the text before tackling this problem.
- If they have, then this problem should be a natural extension of the original one.
- Encourage students to follow the problem solving steps. There are two parts to this problem. Be sure that the
students identify each part. - Then have students draw a diagram to show the original tent and the two new tents as well. Students can label
them A, B and C. - Finally, using a scale, have students measure the distances.
- Who has the shortest distance to run?
- Ask students to show their work and to justify their thinking.
IV.NotesonAssessment
- Walk around as students work on this problem.
- Offer assistance when necessary and remind the students of the problem solving steps.
- When finished, allow students an opportunity to share their work.
- If there are different answers, ask groups to justify their answer.
Chapter 5. Geometry TE - Problem Solving