## Lengthy Relationships

## _**INTRODUCTION**

_

Look around at people's feet. You will notice that some people have longer feet than others. Do the individuals with longer feet also have longer legs? Are people with longer legs taller? Are the number of strides a person takes in a given distance different when he/she is running or walking? Does the person's stride length change with speed? Would the same hold true for birds? For dinosaurs? For early hominins? Can patterns of the present give you clues to patterns in the past?

Look around at people's feet. You will notice that some people have longer feet than others. Do the individuals with longer feet also have longer legs? Are people with longer legs taller? Are the number of strides a person takes in a given distance different when he/she is running or walking? Does the person's stride length change with speed? Would the same hold true for birds? For dinosaurs? For early hominins? Can patterns of the present give you clues to patterns in the past?

## Instructions

_
Your job is to answer the following questions using the
following lab procedures. You will gather data from classmates and family
members to determine if there is a relationship between foot length, leg
length, and height. You will also measure your stride while walking and
running. Use the following terms when taking your measurements:

A. Foot Length and Leg Length

B. Foot Length and Height

C. Leg Length and Height

D. Stride Length and Leg Length

E. Stride Length and Speed

Meter Stick, Graph Paper, two types of paint (students will put feet in it), towels, butcher paper

1. In your lab group, gather the following data, foot length, leg length, height (all measurements must be in centimeters), and record.

2. Calculate the ratio of leg length (L) to foot length (F) for each

3. Calculate the ratio of leg length (L) to foot length (F) for each

4. For homework, collect the above data from a minimum of three family members and/or friends.

1. Measure and mark off a distance of 2,000 cm (20m).

2.

3. Run the length while counting the number of strides.

3. Calculate the stride length by dividing the distance by the number of strides.

4. Measure and record your leg length.

5. Calculate the ratio of your stride length to leg length. Record.

6. Repeat steps 1-3, but do this on butcher paper measured out to 20 m. Use one color for walking and one color for running.

7. Determine the stride length by measuring the distance between footprints.

8. Analyze the data collected and summarize any patterns you have found.

9. For your write up you will need to write supply data tables, graphs, a conclusion and an evaluation.

**foot length**: distance from heel to toe (without shoe)**leg length**: distance from the base of the heel (calcaneous) to the hip joint (acetabulem)**hip Joint**: top of femur on the outside of the hip joint (To find this spot, lift your knee until your thigh is parallel to the floor. Feel for the hip joint in your buttocks area, put your leg down, and measure from that point to the floor.)**height**: distance from floor to the top of the head**stride length**: usually the distance from the back of the heel of one footprint to the back of the heel of the next footprint of that**same foot**; in other words, the distance of TWO steps.**OBJECTIVES**: TO FIND THE RELATIONSHIP BETWEEN:A. Foot Length and Leg Length

B. Foot Length and Height

C. Leg Length and Height

D. Stride Length and Leg Length

E. Stride Length and Speed

**MATERlAL****S:**Meter Stick, Graph Paper, two types of paint (students will put feet in it), towels, butcher paper

**PROCEDURE****Part A**1. In your lab group, gather the following data, foot length, leg length, height (all measurements must be in centimeters), and record.

2. Calculate the ratio of leg length (L) to foot length (F) for each

**group**member and record3. Calculate the ratio of leg length (L) to foot length (F) for each

**lab**member and record your results.4. For homework, collect the above data from a minimum of three family members and/or friends.

**Part B**1. Measure and mark off a distance of 2,000 cm (20m).

2.

**Walk**the length while counting the number of strides. Record.3. Run the length while counting the number of strides.

3. Calculate the stride length by dividing the distance by the number of strides.

4. Measure and record your leg length.

5. Calculate the ratio of your stride length to leg length. Record.

6. Repeat steps 1-3, but do this on butcher paper measured out to 20 m. Use one color for walking and one color for running.

7. Determine the stride length by measuring the distance between footprints.

8. Analyze the data collected and summarize any patterns you have found.

9. For your write up you will need to write supply data tables, graphs, a conclusion and an evaluation.

## Previous Examples:

example__1.pdf | |

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example__2.pdf | |

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example 3.pdf | |

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