Do you see what I see?June 2013

Lesson 2: What color do you see?

Candy-Coated Chocolates Worksheet

Procedure in brief:

  1. Pick up cup #1 and pour the contents onto the paper plate positioned underneath the lamp.
  2. Simultaneously, start the stopwatch and begin removing all of the red candies, placing them back into the cup (refrain from looking at the candies in the cup at this time).
  3. After you believe you have removed all the red candies, stop the stopwatch.
  4. Pour the removed candies onto the table.
  5. Use the flashlight to check the color of the candies (or wait for overhead lights to come on).
  6. Record the time, # of red removed, # of non-red removed, total removed, and total red in the tables below for each station (be sure to record data in the table matching the station).
  7. Repeat steps 1-6 for each cupwith a different group member using a different cup.
  8. Follow directions below the table and answer any questions.
  9. Moveon to the next station and repeat all steps.

Station 1 - White Light
Cup / # of red removed / # of non-red removed / Total removed / Total red / Time (s) / Selection % Accuracy / Completion % Accuracy
1
2
3
4

1.What color do you predict the red candies will look like under red light? Why?

Station 2 - Red Light
Cup / # of red removed / # of non-red removed / Total removed / Total red / Time (s) / Selection % Accuracy / Completion % Accuracy
1
2
3
4

2. What color do you predict the red candies will look like under green light? Why?

Station 3 - Green Light
Cup / # of red removed / # of non-red removed / Total removed / Total red / Time (s) / Selection % Accuracy / Completion % Accuracy
1
2
3
4

3. What color do you predict the red candies will look like under blue light? Why?

Station 4 - Blue Light
Cup / # of red removed / # of non-red removed / Total removed / Total red / Time (s) / Selection % Accuracy / Completion % Accuracy
1
2
3
4

Directions: After finishing every station calculate Selection % Accuracy (# of red removed/ Total removed) and Completion % Accuracy (# of red removed/ Total red) for each cup. Answer questions and fill in the table below using the data your group collected.

4. Were your predictions about the apparent color of the red candycorrect? If not, how did your observations differ from your predictions?

Data Analysis Table
Light Color / Average Time/Attempt / Average Time/Red mm / Average Selection % Accuracy / Average Completion % Accuracy
White
Red
Green
Blue

Average Time/Attempt = sum of time at station / # of attempts

Average Time/Red mm = sum of time at station / sum of total red mm’s

Average Selection % Accuracy = sum of Selection % Accuracy / # of attempts

Average Completion % Accuracy = sum of Completion % Accuracy / # of attempts

Directions: In Graph 1, use a grouped bar graph to graph Average Selection % Accuracy vs. Light Color and Average Completion % Accuracy vs. Light Color. Remember to correctly label both axes and create a legend when necessary.

Directions: In Graph 2, use a grouped bar graph to graph Average Time/Attempt vs. Light Color and Average Time/Red candy vs. Light Color.

Directions: In Graph 3, use a line graph to graph Time vs. Cup # for each station. Label and differentiate each line.

Directions: In Graph 4 use a line graph to graph Selection % Accuracy vs Cup # for each station below. Label and differentiate each line.

Directions: In Graph 5 use a line graph to graph Completion % Accuracy vs. Cup # for each station. Label and differentiate each line.

Directions: Use the graphs you’ve just created to answer the following questions.

At which station was average selection accuracy the lowest? What does it mean if selection % accuracy was lowest at that station?

At which station was average completion accuracy the lowest? Briefly develop a hypothesis about why completion accuracy was lowest at this station.

Is there any relationship between average selection % accuracy and average completion % accuracy? When your selection accuracy was low, was completion accuracy low also?

On average which station took the most time per attempt? Is this a good measure of how difficult the station was? Why or why not?

On average which station took the most time per red candy? Why might this be a better measure of the difficulty at this station?

Do you notice any trends in Graph 3? Hypothesize why there is or isn’t any noticeable trends between time and cup #.

In Graphs 4 and 5 did accuracy tend to increase with cup #? Why or why not?

1