TIME IN MIN & SEC     TIME IN SECONDS           VARIANCES (TIME - AVERAGE TIME)
      2     17.780                               137.780                         -0.406
      2     18.700                               138.700                         +0.514
      2     18.400                               138.400                         +0.214
      2     18.290                               138.290                         +0.104
      2     18.150                               138.150                         -0.036
      2     18.710                               138.710                         +0.524
      2     17.435                               137.435                         -0.751
      2     18.105                               138.105                         -0.081
      2     18.340                               138.340                         +0.154
      2     17.990                               137.990                         -0.196
      2     18.150                               138.150                         -0.036
                              TOTAL         1,520.050                         +0.004

This is a table showing the results of an experiment done on a moving sidewalk at lambert airport.

This table shows times, averages and difference of the average from each time.

To get the times my classmates went to the airport and used a stopwatch as they rode the walkway. they ten recorded all eleven times and those times are the numbers shown in the first column.

To get the numbers in the second column I took the number of seconds in a minute (60) and multiplied by 2. I then added the number of seconds together

example: 120sec + 17.78sec = 137.78sec

I then put that number in the second column.

At the end of the second column I added all of the numbers in that column together and got 1520.05 total seconds. I then took that number and divived it by eleven (the number of times in all) to get the average time on the walkway.

In the third column I took each number from the second column and subtracted the average from it. This shows the difference between each time and the average.

This experiment shows a simple example of the formula d = r t where d = distance, r = rate and t = time.

You can use this formula for a lot of things. One way to use it is to find out how fast you walked in our last experiment.

If you walked 100 feet, you put 100 into the formula for d For t you put in the amount of time it took you to walk. It took me 20 seconds.

so now you should have an equation that looks like this 100=r*20 this means 100 equals the rate you walked times 20 seconds.

To find out what r is you divide 100 by 20. Your answer should be 5. This means that you walked 5 feet per second.

For more information and ideas about this project you may link to a page written by one of the following math artists: Danielle, Darlene, Kellie, Jill, Nanyal, Kevin, Crystal's First and Third Web Page, Rachel, Christina, Jennifer, Candice, Vincent, Esther and Melinda. Most of us are in this picture but not in order of names.