Mastering the Demands of the Ohio Science Standards
~ Effervescent Brand Effectiveness ~
Which brand of effervescent tablets (like Alka-Seltzer) neutralizes an upset stomach
best?
Group size: 2 to 4 students – ideally 3 students
Materials:
Various types of Effervescent tablets
Clear plastic cups
Clock w/second hand
Balance
plastic spoon
craft stick
pH paper or probe
graduated cylinder (optional)
orange juice
Directions:
1. Group member responsibilities: Tallest person will be the materials manager; shortest will be the
project manager and data gatherer; middle height will be the presenter.
2. Write a plan that will allow your group to find out the answer to the above question using only the
materials available. Your plan must include:
• How you will perform the testing
• What is to be measured during the investigation and how it will be recorded
• How you will report your results
Suggestions to help get started:
Gather the materials
In one cup you will measure the change in pH of the orange juice before and after using one
brand of effervescent. In the other cup you will measure the change in pH of the orange juice
before and after using a second brand of effervescent tablet.
Remember to consider and control variables other than the brand of the tablet.
Teacher Check
3. Perform the investigation and collect appropriate data.
Teacher Check
4. Summarize your data and write a statement to answer the investigation question and support the
answer with evidence and reasoning that clearly describes what you found out.
5. Be prepared to make a presentation of the results to the rest of the class when called upon.
Curriculum Engineers, Inc.: Building a stronger STEM foundation in today’s schools.
Amy Bain and Meri Johnson, www.curriculumengineers.com
Mastering the Demands of the Ohio Science Standards
RUBRIC (This is how you will be evaluated)
Process or Content being Evaluated
1. Could the plan be repeated by someone else?
2. Was thought given to controlling the variables?
3. Was “What is to be measured?” clearly stated?
4. Did group members work cooperatively?
5. Did the group do the activity according to their plan or corrected
their plan before implementing it?
6. Were group members given individual responsibilities?
7. Was the presentation informative and clear?
8. Did the group cleanup their work area appropriately?
9. Did the group members complete a claim with evidence /
reasoning?
Value
Earned
7
7
7
6
7
6
10
5
15
70
TOTALS
Curriculum Engineers, Inc.: Building a stronger STEM foundation in today’s schools.
Amy Bain and Meri Johnson, www.curriculumengineers.com
Mastering the Demands of the Ohio Science Standards
~~ Effervescent Brand Effectiveness ~~
Which brand of effervescent tablets (like Alka-Seltzer) neutralizes an upset stomach
best?
Group size: 2 to 4 students – ideally 3 students
Materials:
Various types of Effervescent tablets
Clear plastic cups
Clock w/second hand
Balance
plastic spoon
craft stick
pH paper or probe
graduated cylinder (optional)
orange juice
Directions:
1. Group assignments: Tallest person will be the materials manager; shortest will be the project manager
and data gatherer; middle height will be the presenter.
2. Gather the materials.
3. Place a mark about 2/3 of the way up on one cup. This will be the “measuring cup” and will control the
amount of orange juice you put in each of the other cups. Fill the measuring cup, to the mark, with
orange juice and transfer the orange juice into the other cups.
4. Make a data table in the space below to record the pH of each trial before and after testing, the change
in pH, the average change in pH and the mass of each tablet.
Teacher Check
5.
6.
7.
8.
9.
Measure the pH of the orange juice in each cup. Record it on the data table.
Open the effervescent tablet pouch of 2 different brands. You will need one whole tablet each.
Mass each of the tablets, record the results on the data table.
Prepare to drop the tablets into the orange juice at exactly the same time.
Start timing as soon as the tablets are dropped into the two cups. Retest the pH after one minute.
Repeat two more times.
10. Average the change in pH.
11. Dispose of the solutions in the sink, rinse out cups and return any unused supplies.
Teacher Check
Write a statement in response to the investigation question, supported by evidence and reasoning.
Don’t forget your reasoning!
RUBRIC (This is how you will be evaluated)
Curriculum Engineers, Inc.: Building a stronger STEM foundation in today’s schools.
Amy Bain and Meri Johnson, www.curriculumengineers.com
Mastering the Demands of the Ohio Science Standards
Process or Content being Evaluated
1. Did the group members work cooperatively?
2. Was thought given to controlling the variables?
3. Was data collected three times and averaged accurately?
4. Did the group do the activity according to their plan or corrected
their plan before implementing it?
5. Was the data reported clearly and accurately?
6. Was the presentation informative and clear?
7. Were group members given individual responsibilities?
8. Did the group cleanup their work area appropriately?
9. Did the group members complete a claim with evidence /
reasoning?
Value
Earned
7
6
12
12
8
12
7
6
15
70
TOTALS
Curriculum Engineers, Inc.: Building a stronger STEM foundation in today’s schools.
Amy Bain and Meri Johnson, www.curriculumengineers.com
Mastering the Demands of the Ohio Science Standards
~~~ Effervescent Brand ~~~
Which brand of effervescent tablets (like Alka-Seltzer) neutralizes an upset stomach
best?
Group size: 2 to 4 students – ideally 3 students
Materials:
Various types of Effervescent tablets
Clear plastic cups
Clock w/second hand
Balance
plastic spoon
craft stick
pH paper or probe
graduated cylinder (optional)
orange juice
Directions:
1. Write a plan that will allow your group to find out the answer to the above question using only the materials
available. If you need other materials or equipment contact the instructor. Your plan must include:
• How the tests will be performed
• What you will measure and record data
• Group member responsibilities
• Who will do what – plan writer, materials gatherer, data collection, presenter(s), clean-up
• How you will report your results
Teacher Check
2. Follow your plan to complete the investigation.
Teacher Check
3. Summarize your data and write a statement to answer the investigation question and support it with
evidence and reasoning that clearly describes what you found out.
4. One or two individuals make a presentation of the results to the rest of the class.
Curriculum Engineers, Inc.: Building a stronger STEM foundation in today’s schools.
Amy Bain and Meri Johnson, www.curriculumengineers.com
Mastering the Demands of the Ohio Science Standards
RUBRIC (This is how you will be evaluated)
Earned
Process or Content being Evaluated
1. Did the plan include a well written hypothesis?
2. Did the plan describe a logical approach to finding an
answer?
3. Was thought given to controlling the variables?
4. Was “What is to be measured?” clearly stated?
5. Were group members given individual responsibilities?
6. Did group members work cooperatively?
7. Did the group do the activity according to their plan or corrected
Value
5
8
8
8
4
4
8
their plan before implementing it?
8. Was the presentation informative and clear?
9. Did the group cleanup their work area appropriately?
10. Did the group members complete a claim with evidence /
reasoning?
5
4
15
70
TOTALS
Curriculum Engineers, Inc.: Building a stronger STEM foundation in today’s schools.
Amy Bain and Meri Johnson, www.curriculumengineers.com
Mastering the Demands of the Ohio Science Standards
~Tablet Condition vs Rate of Dissolution of an Effervescent Tablet~
How does the condition (whole or crushed) of an effervescent tablet (like Alka-Seltzer) affect how
fast it dissolves?
Group size: 2 to 4 students – ideally 3 students
Materials:
Effervescent tablets
Clear plastic cups
Clock w/second hand
plastic spoon
craft stick
water
graduated cylinder (optional)
Directions:
1. Group member responsibilities: Tallest person will be the materials manager; shortest will be the
project manager and data gatherer; middle height will be the presenter.
2. Write a plan that will allow your group to find out the answer to the above question using only the
materials available. Your plan must include:
• How you will test the samples
• What is to be measured during the experiment
• How you will report your results
Teacher check
3.
Perform the experiment and clean up the lab station
Teacher check
4. Write a statement to respond to the investigation question that is supported with evidence and reasoning
that clearly describes what you found out.
5. Be prepared to make a presentation of the results to the rest of the class when called upon.
Curriculum Engineers, Inc.: Building a stronger STEM foundation in today’s schools.
Amy Bain and Meri Johnson, www.curriculumengineers.com
Mastering the Demands of the Ohio Science Standards
RUBRIC (This is how you will be evaluated)
Process or Content being Evaluated
1. Could the plan be repeated by someone else & multiple trials?
2. Was thought given to controlling the variables?
3. Was “What is to be measured?” clearly stated?
4. Did group members work cooperatively?
5. Did the group do the activity according to their plan or corrected their
plan before implementing it?
6. Were group members given individual responsibilities?
7. Was the presentation informative and clear?
8. Did the group cleanup their work area appropriately?
9. Did the group members complete a claim with evidence / reasoning?
Value
7
7
7
6
7
Earned
6
10
5
15
70
TOTALS
Curriculum Engineers, Inc.: Building a stronger STEM foundation in today’s schools.
Amy Bain and Meri Johnson, www.curriculumengineers.com
Mastering the Demands of the Ohio Science Standards
~~Tablet Condition vs Rate of Dissolution of an Effervescent Tablet~~
How does the condition (whole or crushed) of an effervescent tablet (like Alka-Seltzer) affect how
fast it dissolves?
Materials:
Effervescent tablets
Clear plastic cups
plastic spoon / craft stick
water
Clock with second hand
graduated cylinder (optional)
Directions:
1.
2.
3.
4.
Group assignments: Tallest person will be the materials manager; shortest will be the project manager and data
gatherer; middle height will be the presenter.
Gather the materials.
Place a mark about 2/3 of the way up on one cup. This will be the “measuring cup” and control the amount of
water you put in each of the other cups. Fill the measuring cup, to the mark, with water and transfer the water into
the other cups.
Make a data chart, including the condition of the tablet, multiple trials and an average of the trials.
Teacher Check
5.
Open the effervescent tablets pouch. You will need one whole tablet. Take the other tablet and crush it into
smaller pieces.
6. Prepare to drop the tablets into the water at exactly the same time.
7. Start timing as soon as the tablets are dropped into the two cups. Record the time it takes until all effervescent
action is completed in each cup and record those times. Repeat two times.
8. Average the three times.
9. Dispose of the solutions in the sink, rinse out cups and return any unused supplies.
Teacher Check
10. Write a statement supported with evidence and reasoning to respond to the lab question. Don’t forget
your reasoning!
Curriculum Engineers, Inc.: Building a stronger STEM foundation in today’s schools.
Amy Bain and Meri Johnson, www.curriculumengineers.com
Mastering the Demands of the Ohio Science Standards
RUBRIC (This is how you will be evaluated)
Process or Content being Evaluated
1. Did the group members work cooperatively?
2. Was thought given to controlling the variables?
3. Was data collected three times and averaged accurately?
4. Did the group do the activity according to their plan or corrected their
plan before implementing it?
5. Was the data reported clearly and accurately?
6. Was the presentation informative and clear?
7. Were group members given individual responsibilities?
8. Did the group cleanup their work area appropriately?
9. Did the group members complete a claim with evidence / reasoning?
Value
7
6
12
12
Earned
8
12
7
6
15
70
TOTALS
Curriculum Engineers, Inc.: Building a stronger STEM foundation in today’s schools.
Amy Bain and Meri Johnson, www.curriculumengineers.com
Mastering the Demands of the Ohio Science Standards
~~~Tablet Condition vs Rate of Dissolution of an Effervescent Tablet~~~
SELECT ONE QUESTION TO INVESTIGATE:
A. How does the condition (whole or crushed) of an effervescent tablet (like Alka-Seltzer)
affect how fast it dissolves?
B. How does the brand (Alka Seltzer or Generic) of an effervescent tablet affect how fast it
dissolves?
Teacher Check
Group size: 2 to 4 students
Materials:
Effervescent tablets
Clear plastic cups
Clock w/second hand
plastic spoon
craft stick
water
graduated cylinder (optional)
Directions:
1.
•
•
•
Write a plan that will allow your group to find out the answer to the above question using only the materials
available. If you need other materials or equipment contact the instructor. Your plan must include:
How you will test the samples
What will be measured?
Group member responsibilities
• Who will do what – plan writer, materials gatherer, data collection, presenter(s), clean-up
• How you will report your results
Teacher Check
2.
Follow your plan to do the investigation.
Teacher Check
3.
4.
Write a statement supported with evidence and reasoning to respond to the lab question
One or two individuals make a presentation of the results to the rest of the class.
RUBRIC (This is how you will be evaluated)
Earned
Process or Content being Evaluated
1. Did the plan including multiple trials?
2. Did the plan describe a logical approach to finding an answer?
3. Was thought given to controlling the variables?
4. Was “What is to be measured?” clearly stated?
5. Were group members given individual responsibilities?
6. Did group members work cooperatively?
7. Did the group do the activity according to their plan or corrected their
Value
5
8
8
8
4
4
8
plan before implementing it?
8. Was the presentation informative and clear?
9. Did the group cleanup their work area appropriately?
10. Did the group members complete a claim with evidence / reasoning?
5
4
15
70
TOTALS
Curriculum Engineers, Inc.: Building a stronger STEM foundation in today’s schools.
Amy Bain and Meri Johnson, www.curriculumengineers.com
Mastering the Demands of the Ohio Science Standards
Curriculum Engineers, Inc.: Building a stronger STEM foundation in today’s schools.
Amy Bain and Meri Johnson, www.curriculumengineers.com
Mastering the Demands of the Ohio Science Standards
~~~~Tablet Condition vs Rate of Dissolution of an Effervescent Tablet~~~~
How does the condition (whole or crushed) of an effervescent tablet (like AlkaSeltzer) affect how fast it dissolves?
Group size: 2 to 4 students
Materials:
Effervescent tablets
Clear plastic cups
Clock w/second hand
plastic spoon
craft stick
water
graduated cylinder (optional)
Directions:
1.
2.
•
•
Decide who will do what – plan writer, materials gatherer, data collection, presenter(s), clean-up
Write a plan that will allow your group to find out the answer to the above question using only the materials
available. If you need other materials or equipment contact the instructor. Your plan must include:
How you will test the samples
What you will measure? (Use the data table to help you make some of the decisions)
TRIAL
WHOLE TABLET
TIME (SECONDS)
CRUSHED TABLET
TIME (SECONDS)
1
2
3
AVERAGE
Teacher Check
3.
Follow your plan to do the investigation.
Teacher Check
4.
How does the condition (whole or crushed) of an effervescent tablet (like Alka-Seltzer) affect how fast it
dissolves?
Provide evidence from your data to support your answer.
What do you think the reason is for the results?
5.
Be prepared to explain the results to the rest of the class.
Curriculum Engineers, Inc.: Building a stronger STEM foundation in today’s schools.
Amy Bain and Meri Johnson, www.curriculumengineers.com
Mastering the Demands of the Ohio Science Standards
RUBRIC (This is how you will be evaluated)
Earned
Process or Content being Evaluated
1. Did the plan include multiple trials?
2. Did the plan describe a logical approach to finding an answer?
3. Was thought given to controlling the variables?
4. Was “What is to be measured?” clearly stated?
5. Were group members given individual responsibilities?
6. Did group members work cooperatively?
7. Did the group do the activity according to their plan or corrected their
Value
5
8
8
6
6
6
8
plan before implementing it?
8. Was the presentation informative and clear?
9. Did the group cleanup their work area appropriately?
10. Did the group members complete a claim with evidence / reasoning?
2
6
15
70
TOTALS
Curriculum Engineers, Inc.: Building a stronger STEM foundation in today’s schools.
Amy Bain and Meri Johnson, www.curriculumengineers.com
Mastering the Demands of the Ohio Science Standards
~~~~Tablet Condition vs Rate of Dissolution of an Effervescent Tablet~~~~
How does the brand of an effervescent tablet (like Alka-Seltzer or Generic brand) affect how fast
it dissolves?
Group size: 2 to 4 students
Materials:
Effervescent tablets
Clear plastic cups
Clock w/second hand
plastic spoon
craft stick
water
graduated cylinder (optional)
Directions:
1.
2.
•
•
Decide who will do what – plan writer, materials gatherer, data collection, presenter(s), clean-up
Write a plan that will allow your group to find out the answer to the above question using only the materials
available. If you need other materials or equipment contact the instructor. Your plan must include:
How you will test the samples
What you will measure? (Use the data table to help you make some of the decisions)
TRIAL
_______________BRAND TABLET
TIME (SECONDS)
__________________BRAND TABLET
TIME (SECONDS)
1
2
3
AVERAGE
Teacher Check
3.
Follow your plan to do the investigation.
Teacher Check
4.
How does the condition brand of an effervescent tablet (like Alka-Seltzer) affect how fast it dissolves?
Provide evidence from your data to support your answer.
What do you think the reason is for the results?
5.
Be prepared to explain the results to the rest of the class.
Curriculum Engineers, Inc.: Building a stronger STEM foundation in today’s schools.
Amy Bain and Meri Johnson, www.curriculumengineers.com
Mastering the Demands of the Ohio Science Standards
RUBRIC (This is how you will be evaluated)
Earned
Process or Content being Evaluated
1. Did the plan include multiple trials?
2. Did the plan describe a logical approach to finding an answer?
3. Was thought given to controlling the variables?
4. Was “What is to be measured?” clearly stated?
5. Were group members given individual responsibilities?
6. Did group members work cooperatively?
7. Did the group do the activity according to their plan or corrected their
Value
5
8
8
6
6
6
8
plan before implementing it?
8. Was the presentation informative and clear?
9. Did the group cleanup their work area appropriately?
10. Did the group members complete a claim with evidence / reasoning?
2
6
15
70
TOTALS
Curriculum Engineers, Inc.: Building a stronger STEM foundation in today’s schools.
Amy Bain and Meri Johnson, www.curriculumengineers.com