OBJECTIVE:
OBJECTIVE:
• To make the best tasting Kool Aid.
• At the end of the lab, students will know the processes involved in the scientific method – from creating a hypothesis, to testing the hypothesis, to analyzing the results and communicating the results.
TASK:
1) Choose a different person to carry out each of the following responsibility: Taster, Recorder, Measurer.
2) As a group, discuss how Kool-Aid is made and what aspects make the “Best” tasting Kool-Aid.
3) Select two ingredients (sugar, water, Kool-Aid) that you will use a constant amount in each trial.
4) Circle the column header on the data table of the ingredient that will you will change in each trial.
5) Based on your knowledge of creating drinks (coffee, tea, Kool-Aid, etc.), create a hypothesis on what combination of each ingredient will make the best tasting Kool-Aid.
6) On a separate paper, write down your steps (procedure) for
• testing your hypothesis
• making the best tasting Kool-Aid.
7) Follow your procedure and record your data in the data table.
8) Once the Taster believes you have the best tasting Kool-Aid, make another batch of the Kool-Aid using the same procedure. Have the other members of the team taste the Kool-Aid and give feedback as to whether it is the best tasting Kool-Aid or not. (use separate cups)
• If the other members do not agree that it is the best tasting, repeat your hypothesis testing steps until all the team members agree that your team has the best tasting Kool-Aid.
• If everyone agrees, write down the procedure for making the best tasting Kool-Aid.
• Once you have found the “Best recipe” see your teacher for a sample of the “control” Kool-Aid. Taste it and compare it to the taste of your Kool-Aid. (the control is made following the directions)
9) Answer the Analysis Questions.
PROCEDURE:
This section should be written in paragraph form
(NOTE: This section normally contains the steps for testing the hypothesis. These steps are not here as you are creating your own steps – see task #5. Be sure to include your measurements and your tools and supplies in your commentary)
Data:
Sample Data Table: Draw your own on your paper
|Trial |Sugar |Water |Kool Aid |Taste Result |Notes / Comments |
| |(Scoops) |(mL) |(Scoops) |(Scale: |Explain why the taste was given that score. |
| | | | |1 – Worst, |Outline what you will do to make the score better. |
| | | | |10 – best) | |
|1. | | | | | |
|2 | | | | | |
|3 | | | | | |
|… | | | | | |
|… | | | | | |
ANALYSIS QUESTIONS: (Answer these questions on a separate sheet of paper.)
1. Why wasn’t your first trial, the “Best” tasting Kool-Aid?
2. What steps of the “Scientific Method” did you use to assess and alter your procedure for the subsequent trials?
3. Explain how your “Best Tasting” Kool-Aid compared to the control.
4. Hypothesize how you would need to change your recipe so that your Kool-Aid tastes just like the control.
5. If someone else were to read your procedure, would they be able to make the same tasting Kool-Aid? Explain your answer with reasoning.
6. How much emphasis did your crew place on precision of measurement? Explain why this is crucial.
7. Compare your steps for making the best tasting Kool-Aid with the steps of two other teams. What are some major differences? Why are the sets of steps different if all of them (the recipes) make the “best tasting” Kool-Aid?
8. What would you change to the procedures to make the results for all the teams the same?
9. What recommendations or advice, would you have for future Kool-Aid makers in chemistry class to use before they write their first hypothesis?
Special thanks to Sam’s Club, Fern Valley Road, for donating the scoops used in this activity.
Record your data in the table below. See task #6
Data Table – Kool Aid Lab
|Trial |Sugar |Water |Kool Aid |Taste Result |Notes / Comments |
| |(Scoops) |(mL) |(Scoops) |(Scale: |Explain why the taste was given that score. |
| | | | |1 – Worst, |Outline what you will do to make the score better. |
| | | | |10 – best) | |
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