2. Maureen Curran and Mary Lou Aalbers Hazelwood School District Click for Teacher Tips Perimeter Area Click here to begin

4. The following lesson is addressing these standards: Extend student understanding of the process and structure for measurement. (MO 1.4, 2.6, 2.7) Apply the concepts of perimeter and area (MO 2.5, 3.8, 4.1) Click here to return to first slide

5. Farmer Jones bought three horses.

6. He must fence in his barnyard to keep his horses from straying.

7. He has 72 feet of fencing available and wants to get the largest corral for his horses.

8. Here are the designs he came up with. 24 12 24 12 27 99 20 18

9. He wants the largest space for his horses to run and has only 72 feet of fencing.

10. 27 99 Would this work? Click for answer

11. 27 99 YES! 27+9+27+9=72 feet

12. 18 Click for answer Would this work?

13. 18 YES! 18+18+18+18=72 feet

14. 20 Would this work? Click for answer

15. 20 NO! 20+20+20+20=80 feet Not enough fencing

16. 24 12 24 12 Would this work ? Click for answer

17. 24 12 24 12 YES! 24+12+24+12=72 feet

18. 27 99 18 24 12 24 12

19. 18

20. In your journal explain why Design B is the best choice. Click here to return to beginning