walking lab write-up lab directions. collect data the hallway will be marked out in 5 m intervals....

Walking Lab Write-Up

Lab Directions

Collect Data

• The hallway will be marked out in 5 m intervals. Students will be stationed at one of the 5 m intervals with a timer. At the teacher’s signal, a student will begin walking at a constant rate down the hall while all the other students simultaneously start their stopwatches. As the student walking passes a 5 m mark, the student at that mark will stop their timer and record the time. We will repeat this procedure 4 times with 4 different walkers. After we have collected all the data, we will combine all our data together to make one data set.

Make Graph

• Obtain a piece of graph paper• Label the x-axis as time (measured in seconds)• Label the y-axis as position (measured in

meters)• Determine your scale for each axis– Find the largest x value and divide by the number of

squares you have available to graph on (# of boxes across)

– Find the largest y value and divide by the number of squares you have available to graph on (# of boxes up)

Make Graph (cont.)

1. Plot your points– Remember time is the x value and position is the y

value)

2. Draw a best-fit line for each trial3. Pick 2 points on each best-fit line and calculate

the slopeSlope=(y2-y1)/(x2-x1)

4. Clearly label each walker’s slope (include units)– Show all work/calculations

Lab Write-Up

• Include the following (these all come from the Lab Notebook Requirements page in the front of your notebook)– Title– Problem/Question (Purpose)– Materials– Procedure (This is labeled as the Explore section)– Experimental Design Questions

• Dependent and independent variable• How will extraneous factors be handled?• What data will be collected• How will you provide repeatable data?

Lab Write-Up

– Data Display– Evidence and Analysis of Results• In the paragraph (or more) analyzing the data include

the following– Compare/contrast your trials– How does the graph of each trial compare with what you

observed while we were collecting data– How are the changes in what you observed reflected in the

graphs?– Answer the 3 questions under the “Evaluate” section on the

printed out lab paper

– Reflection