record results then create a spreadsheet
For this forensic investigation you are going to record findings at the bottom of this page. The aim is to profile your fellow student's/suspects.
The results of your calculations should be about 15, illustrating that the length of a person's foot is approximately 15 percent of his or her height. Find out the approximate height of each of your classmates by measuring their foot and charting it on a spreadsheet. Use this proporation for your calculations: 15/100 = Length of Foot/x (person's height)
When you have the length of a foot, forensically you will be able to approximate the height of the person. This however, works best on a full grown individual for the ratio of body parts is slightly different in growing children.
- All student's in your room should begin this forensic investigation by removing their shoes and measuring their height using a tape measure against a wall.
- Measure the length of the student's left foot from the wall to the tip of the big toe.
- Draw a straight line, longer than the student's foot you are measuring on a piece of paper.
- Put the paper on a flat surface. Have the person stand on the line with their heel and longest toe centred on the line.
- Place a mark on the line at the tip of the toe and the back of the heel.
- Measure both feet.
- Measure the distance between the marks and use a conversion supplied by your teacher to find the shoe size.
- Examine the numbers. Do you see a pattern?
- Divide the length of each person's left foot by his/her height. Multiply the quotient by 100. What do you get? You may also want to use the calculator on a computer for this activity.
The results of your calculations should be about 15, illustrating that the length of a person's foot is approximately 15 percent of his or her height. Find out the approximate height of each of your classmates by measuring their foot and charting it on a spreadsheet. Use this proporation for your calculations: 15/100 = Length of Foot/x (person's height)
When you have the length of a foot, forensically you will be able to approximate the height of the person. This however, works best on a full grown individual for the ratio of body parts is slightly different in growing children.