Dosage Calculation System: A Personalized Approach
Created byAnge Evans
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Dosage Calculation System: A Personalized Approach

Grade 11MathScience3 days
In this project, students design a personalized dosage calculator, integrating mathematical conversions and scientific principles to ensure accurate and safe medication delivery. They explore unit conversions, the impact of body weight on dosage, and the application of formulas like C1V1 = C2V2. Furthermore, students apply Newton's Law of Cooling to medication storage and use mathematical models to simulate drug concentration changes, enhancing their understanding of medication safety and personalized medicine.
Unit ConversionsDosage CalculationMedication SafetyDrug ConcentrationMathematical ModelingNewton's Law of CoolingPersonalized Medicine
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Inquiry Framework

Question Framework

Driving Question

The overarching question that guides the entire project.How can we design a personalized dosage calculator that integrates mathematical conversions and scientific principles to ensure accurate and safe medication delivery for patients with varying weights and conditions?

Essential Questions

Supporting questions that break down major concepts.
  • How do you convert between different units of measurement (e.g., weight, volume, temperature) and why is it important in medication dosage calculations?
  • How does body weight affect medication dosage, and what mathematical relationships are used to determine the correct dosage?
  • How can the formula C1V1 = C2V2 be used to calculate concentration changes in medication dosages?
  • How does Newton's Law of Cooling apply to medication storage and administration?
  • How can mathematical models be used to simulate drug concentration changes in the body over time?
  • What are the potential consequences of incorrect dosage calculations, and how can errors be minimized?
  • How do you apply the formula pressure = density × gravity × height to calculate the pressure?
  • How to convert between units for temperature and pressure?

Standards & Learning Goals

Learning Goals

By the end of this project, students will be able to:
  • Students will be able to convert between different units of measurement (e.g., weight, volume, temperature).
  • Students will be able to explain how body weight affects medication dosage.
  • Students will be able to use the formula C1V1 = C2V2 to calculate concentration changes in medication dosages.
  • Students will be able to apply Newton's Law of Cooling to medication storage and administration.
  • Students will be able to use mathematical models to simulate drug concentration changes in the body over time.
  • Students will be able to identify the potential consequences of incorrect dosage calculations and how errors can be minimized.
  • Students will be able to apply the formula pressure = density × gravity × height to calculate the pressure.

Entry Events

Events that will be used to introduce the project to students

Dosage Error News

A local news story about a dosage error at a nearby hospital sparks outrage and concern. Students analyze the case, identifying the mathematical errors that led to the incident and proposing preventative measures, prompting them to investigate personalized dosage calculations.

Medical Record Mystery

Students receive a cryptic medical record with missing dosage information and conflicting units. They must decipher the record, convert units, and calculate the correct dosage to "save the patient," introducing the need for personalized calculations.

Drug Trial Challenge

A pharmaceutical company presents students with data from a new drug trial, highlighting the variability in patient response based on weight. Students explore the data, identify trends, and propose a personalized dosage algorithm, emphasizing the importance of individualization.

Ask a Pharmacist

Students participate in a mock "Ask a Pharmacist" live Q&A session where they answer pre-written questions about dosage calculations and unit conversions. The areas where students struggle most highlight the need for a personalized dosage calculator project.

Simulated Patient Scenario

Students are presented with a scenario where they must prepare medication for a simulated patient with unique characteristics (e.g., weight, age, kidney function). They must calculate the correct dosage and explain their reasoning, revealing the complexities of personalized medicine.
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Portfolio Activities

Portfolio Activities

These activities progressively build towards your learning goals, with each submission contributing to the student's final portfolio.
Activity 1

Unit Conversion Toolkit

Students will create a unit conversion reference sheet tailored for medication dosages.

Steps

Here is some basic scaffolding to help students complete the activity.
1. Research common units used in medication dosages (e.g., mg, g, kg, mL, L, Celsius, Fahrenheit).
2. Create conversion factors for each unit pair (e.g., 1 g = 1000 mg).
3. Organize conversion factors into a clear and easy-to-use chart.
4. Include examples of how to use the conversion factors in dosage calculations.

Final Product

What students will submit as the final product of the activityA comprehensive unit conversion chart, including weight (mg to g, lbs to kg), volume (mL to L), and temperature (Celsius to Fahrenheit), with real-world dosage examples.

Alignment

How this activity aligns with the learning objectives & standardsLearning Goal: Students will be able to convert between different units of measurement (e.g., weight, volume, temperature).
Activity 2

Weight-Based Dosage Detective

Students will investigate the relationship between body weight and medication dosage by analyzing case studies.

Steps

Here is some basic scaffolding to help students complete the activity.
1. Select a variety of case studies with varying patient weights and prescribed dosages.
2. Calculate the dosage per kilogram of body weight for each case study.
3. Analyze the data to identify trends and patterns in dosage adjustments based on weight.
4. Write a report summarizing your findings, including potential risks of incorrect dosage calculations.

Final Product

What students will submit as the final product of the activityA report summarizing the effects of body weight on drug dosages, including calculations and explanations for different weight categories.

Alignment

How this activity aligns with the learning objectives & standardsLearning Goal: Students will be able to explain how body weight affects medication dosage.
Activity 3

Concentration Calculation Challenge

Students will solve practical problems involving concentration changes using the C1V1 = C2V2 formula.

Steps

Here is some basic scaffolding to help students complete the activity.
1. Understand the meaning of each variable in the C1V1 = C2V2 formula.
2. Practice solving problems involving dilution and concentration of solutions.
3. Create your own problems with real-world medication scenarios.
4. Provide step-by-step solutions to your problems, showing the application of the formula.

Final Product

What students will submit as the final product of the activityA problem set with detailed solutions, demonstrating the application of C1V1 = C2V2 in diluting or concentrating medications.

Alignment

How this activity aligns with the learning objectives & standardsLearning Goal: Students will be able to use the formula C1V1 = C2V2 to calculate concentration changes in medication dosages.
Activity 4

Newton's Cooling Lab

Students will conduct an experiment to observe Newton's Law of Cooling with a simulated medication.

Steps

Here is some basic scaffolding to help students complete the activity.
1. Prepare a simulated medication (e.g., colored water) and measure its initial temperature.
2. Place the medication in different storage conditions (e.g., refrigerator, room temperature) and measure the temperature over time.
3. Graph the temperature changes over time for each condition.
4. Analyze the data and write a lab report, explaining how Newton's Law of Cooling applies to medication storage.

Final Product

What students will submit as the final product of the activityA lab report analyzing the cooling rates of a simulated medication under different storage conditions, and recommendations for proper storage to maintain efficacy.

Alignment

How this activity aligns with the learning objectives & standardsLearning Goal: Students will be able to apply Newton's Law of Cooling to medication storage and administration.
Activity 5

Drug Concentration Modeler

Students will create a simple mathematical model to simulate how drug concentration changes in the body over time, considering factors like absorption and elimination.

Steps

Here is some basic scaffolding to help students complete the activity.
1. Research the basic principles of drug absorption and elimination.
2. Develop a simple mathematical equation to represent the change in drug concentration over time.
3. Use a spreadsheet or graphing software to simulate the drug concentration changes.
4. Analyze the results and discuss the implications for dosage timing and frequency.

Final Product

What students will submit as the final product of the activityA graph or spreadsheet showing the simulated drug concentration in the body over time, with explanations of the assumptions and limitations of the model.

Alignment

How this activity aligns with the learning objectives & standardsLearning Goal: Students will be able to use mathematical models to simulate drug concentration changes in the body over time.
Activity 6

Dosage Error Prevention

Students will analyze case studies of dosage errors and propose strategies to prevent similar errors in the future.

Steps

Here is some basic scaffolding to help students complete the activity.
1. Research real-world cases of medication errors due to incorrect dosage calculations.
2. Identify the factors that contributed to the errors (e.g., unit confusion, calculation mistakes).
3. Propose strategies to prevent similar errors, such as double-checking calculations, using standardized units, and implementing technology solutions.
4. Create a presentation summarizing your findings and recommendations.

Final Product

What students will submit as the final product of the activityA presentation outlining the causes and consequences of dosage errors, and recommendations for improving safety protocols.

Alignment

How this activity aligns with the learning objectives & standardsLearning Goal: Students will be able to identify the potential consequences of incorrect dosage calculations and how errors can be minimized.
Activity 7

Pressure Calculation Expert

Students will calculate pressure in various medical contexts using the formula Pressure = Density x Gravity x Height.

Steps

Here is some basic scaffolding to help students complete the activity.
1. Research densities of bodily fluids and standard gravity.
2. Find height/depth values in the human body for different scenarios.
3. Calculate pressure using the formula P = Density x Gravity x Height.
4. Present calculated results with detailed explanations.

Final Product

What students will submit as the final product of the activityA series of calculated pressure problems related to human body such as blood pressure or spinal fluid pressure, and the pressure exerted by medical devices, each with a detailed explanation.

Alignment

How this activity aligns with the learning objectives & standardsLearning Goal: Students will be able to apply the formula pressure = density × gravity × height to calculate the pressure.
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Rubric & Reflection

Portfolio Rubric

Grading criteria for assessing the overall project portfolio

Math in Medicine Portfolio Rubric

Category 1

Unit Conversion Proficiency

Assesses the accuracy, clarity, and application of unit conversions in medication dosages.
Criterion 1

Conversion Accuracy

Accuracy of conversions between weight, volume, and temperature units.

Exemplary
4 Points

All conversions are accurate and clearly presented, with correct units and labels.

Proficient
3 Points

Most conversions are accurate, with minor errors or omissions in units and labels.

Developing
2 Points

Some conversions are accurate, but there are significant errors or omissions in units and labels.

Beginning
1 Points

Few conversions are accurate, with major errors or omissions in units and labels.

Criterion 2

Chart Clarity

Clarity and organization of the conversion chart.

Exemplary
4 Points

Chart is exceptionally clear, well-organized, and easy to use, with logical groupings and visual aids.

Proficient
3 Points

Chart is clear, well-organized, and easy to use, with logical groupings.

Developing
2 Points

Chart is somewhat organized, but may be difficult to use or understand.

Beginning
1 Points

Chart is poorly organized and difficult to use or understand.

Criterion 3

Example Relevance

Relevance and correctness of real-world dosage examples.

Exemplary
4 Points

Examples are highly relevant to medication dosages and demonstrate a deep understanding of unit conversions.

Proficient
3 Points

Examples are relevant to medication dosages and demonstrate an understanding of unit conversions.

Developing
2 Points

Examples are somewhat relevant to medication dosages, but may contain inaccuracies.

Beginning
1 Points

Examples are not relevant to medication dosages or contain significant inaccuracies.

Category 2

Weight-Based Dosage Analysis

Evaluates the student's ability to analyze the relationship between body weight and medication dosage.
Criterion 1

Calculation Accuracy

Correctness of dosage calculations per kilogram of body weight.

Exemplary
4 Points

All calculations are correct and clearly justified, with appropriate units and labels.

Proficient
3 Points

Most calculations are correct, with minor errors or omissions in units and labels.

Developing
2 Points

Some calculations are correct, but there are significant errors or omissions in units and labels.

Beginning
1 Points

Few calculations are correct, with major errors or omissions in units and labels.

Criterion 2

Trend Analysis

Analysis of trends and patterns in dosage adjustments based on weight.

Exemplary
4 Points

Analysis is insightful, comprehensive, and identifies complex relationships between weight and dosage.

Proficient
3 Points

Analysis is thorough, identifies clear trends, and explains the relationship between weight and dosage.

Developing
2 Points

Analysis identifies some trends, but may lack depth or explanation.

Beginning
1 Points

Analysis is superficial, with minimal identification of trends.

Criterion 3

Risk Discussion

Discussion of potential risks of incorrect dosage calculations.

Exemplary
4 Points

Discussion is thorough, insightful, and identifies a wide range of potential risks with supporting evidence.

Proficient
3 Points

Discussion is comprehensive, identifies potential risks, and provides supporting evidence.

Developing
2 Points

Discussion identifies some potential risks, but may lack detail or supporting evidence.

Beginning
1 Points

Discussion is limited and does not adequately address the potential risks.

Category 3

Concentration Calculation Skills

Assesses the student's ability to apply the C1V1 = C2V2 formula in practical medication dosage calculations.
Criterion 1

Variable Comprehension

Understanding of variables in the C1V1 = C2V2 formula.

Exemplary
4 Points

Demonstrates a complete and nuanced understanding of all variables and their implications.

Proficient
3 Points

Demonstrates a thorough understanding of all variables.

Developing
2 Points

Demonstrates a basic understanding of most variables.

Beginning
1 Points

Demonstrates a limited understanding of the variables.

Criterion 2

Problem-Solving Accuracy

Accuracy in solving dilution and concentration problems.

Exemplary
4 Points

All problems are solved correctly with clear and logical steps.

Proficient
3 Points

Most problems are solved correctly with clear steps.

Developing
2 Points

Some problems are solved correctly, but steps may be unclear or missing.

Beginning
1 Points

Few problems are solved correctly, and steps are unclear or missing.

Criterion 3

Scenario Relevance

Relevance and realism of created medication scenarios.

Exemplary
4 Points

Scenarios are highly relevant, realistic, and demonstrate a sophisticated understanding of medication preparation.

Proficient
3 Points

Scenarios are relevant, realistic, and demonstrate an understanding of medication preparation.

Developing
2 Points

Scenarios are somewhat relevant, but may lack realism or clarity.

Beginning
1 Points

Scenarios are not relevant or realistic and do not demonstrate an understanding of medication preparation.

Category 4

Cooling Law Application

Evaluates the student's ability to apply Newton's Law of Cooling in a practical experiment related to medication storage.
Criterion 1

Measurement Accuracy

Accuracy of temperature measurements and data collection.

Exemplary
4 Points

Measurements are precise and accurate, with meticulous attention to detail in data collection.

Proficient
3 Points

Measurements are accurate and data collection is thorough.

Developing
2 Points

Measurements are reasonably accurate, but data collection may be incomplete.

Beginning
1 Points

Measurements are inaccurate, and data collection is significantly incomplete.

Criterion 2

Graph Clarity

Clarity and accuracy of the graph showing temperature changes over time.

Exemplary
4 Points

Graph is exceptionally clear, accurate, and effectively communicates the temperature changes over time.

Proficient
3 Points

Graph is clear, accurate, and effectively communicates the temperature changes over time.

Developing
2 Points

Graph is somewhat clear, but may contain inaccuracies or be difficult to interpret.

Beginning
1 Points

Graph is unclear, inaccurate, and difficult to interpret.

Criterion 3

Law Application

Application of Newton's Law of Cooling to explain medication storage.

Exemplary
4 Points

Explanation demonstrates a deep understanding of Newton's Law of Cooling and its implications for medication storage, with insightful recommendations.

Proficient
3 Points

Explanation demonstrates a thorough understanding of Newton's Law of Cooling and its implications for medication storage.

Developing
2 Points

Explanation demonstrates a basic understanding of Newton's Law of Cooling, but may lack detail or application.

Beginning
1 Points

Explanation demonstrates a limited understanding of Newton's Law of Cooling and its application to medication storage.

Category 5

Drug Concentration Modeling

Assesses the student's ability to model drug concentration changes in the body using mathematical principles.
Criterion 1

Research Quality

Research on drug absorption and elimination principles.

Exemplary
4 Points

Research is thorough, insightful, and demonstrates a comprehensive understanding of drug absorption and elimination.

Proficient
3 Points

Research is comprehensive and demonstrates a strong understanding of drug absorption and elimination.

Developing
2 Points

Research is adequate, but may lack depth or detail.

Beginning
1 Points

Research is minimal and does not adequately address the principles of drug absorption and elimination.

Criterion 2

Equation Development

Development of a mathematical equation to represent drug concentration changes.

Exemplary
4 Points

Equation is sophisticated, accurate, and effectively represents the drug concentration changes over time, considering multiple factors.

Proficient
3 Points

Equation is accurate and effectively represents the drug concentration changes over time.

Developing
2 Points

Equation is somewhat accurate, but may oversimplify the drug concentration changes.

Beginning
1 Points

Equation is inaccurate or does not effectively represent the drug concentration changes.

Criterion 3

Implication Analysis

Analysis and discussion of implications for dosage timing and frequency.

Exemplary
4 Points

Analysis is insightful, comprehensive, and provides nuanced recommendations for dosage timing and frequency based on the model.

Proficient
3 Points

Analysis is thorough and provides clear recommendations for dosage timing and frequency based on the model.

Developing
2 Points

Analysis is adequate, but recommendations may be limited or lack detail.

Beginning
1 Points

Analysis is superficial and does not provide adequate recommendations for dosage timing and frequency.

Category 6

Dosage Error Analysis

Evaluates the student's ability to analyze dosage errors and propose effective prevention strategies.
Criterion 1

Case Study Research

Research on real-world cases of medication errors.

Exemplary
4 Points

Research is extensive, covering a wide range of cases with detailed information on contributing factors.

Proficient
3 Points

Research is thorough, covering multiple cases with clear information on contributing factors.

Developing
2 Points

Research is adequate, but may lack depth or detail on contributing factors.

Beginning
1 Points

Research is minimal and does not adequately address real-world cases of medication errors.

Criterion 2

Factor Identification

Identification of factors contributing to dosage errors.

Exemplary
4 Points

Identifies a comprehensive range of factors with insightful analysis of their interrelationships.

Proficient
3 Points

Identifies key factors contributing to dosage errors with clear explanations.

Developing
2 Points

Identifies some factors, but explanations may lack depth or clarity.

Beginning
1 Points

Identifies few factors and explanations are minimal.

Criterion 3

Prevention Strategies

Effectiveness of proposed strategies to prevent similar errors.

Exemplary
4 Points

Strategies are innovative, practical, and demonstrate a deep understanding of error prevention.

Proficient
3 Points

Strategies are practical, well-reasoned, and likely to prevent similar errors.

Developing
2 Points

Strategies are somewhat practical, but may lack detail or feasibility.

Beginning
1 Points

Strategies are impractical or unlikely to prevent similar errors.

Category 7

Pressure Calculation Expertise

Assesses the student's ability to calculate pressure in various medical contexts using the formula P = DGH.
Criterion 1

Density/Gravity Research

Accuracy of density and gravity research.

Exemplary
4 Points

Research is accurate, thorough, and demonstrates a comprehensive understanding of density and gravity.

Proficient
3 Points

Research is accurate and demonstrates a strong understanding of density and gravity.

Developing
2 Points

Research is adequate, but may lack depth or detail.

Beginning
1 Points

Research is minimal and does not adequately address density and gravity.

Criterion 2

Height/Depth Values

Relevance and accuracy of height/depth values in medical scenarios.

Exemplary
4 Points

Values are highly relevant, accurate, and demonstrate a sophisticated understanding of medical contexts.

Proficient
3 Points

Values are relevant, accurate, and demonstrate a strong understanding of medical contexts.

Developing
2 Points

Values are somewhat relevant, but may lack accuracy or context.

Beginning
1 Points

Values are not relevant or accurate and do not demonstrate an understanding of medical contexts.

Criterion 3

Calculation Accuracy

Correctness of pressure calculations and explanations.

Exemplary
4 Points

Calculations are flawless, explanations are clear and comprehensive, and demonstrate a deep understanding of pressure in medical contexts.

Proficient
3 Points

Calculations are accurate, explanations are clear, and demonstrate a strong understanding of pressure in medical contexts.

Developing
2 Points

Calculations contain minor errors, explanations are adequate, and demonstrate a basic understanding of pressure.

Beginning
1 Points

Calculations contain significant errors, explanations are unclear, and demonstrate a limited understanding of pressure.

Reflection Prompts

End-of-project reflection questions to get students to think about their learning
Question 1

How did your understanding of unit conversions evolve as you worked on the Unit Conversion Toolkit, and how did this impact your confidence in performing dosage calculations?

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Question 2

In what ways did analyzing case studies in the Weight-Based Dosage Detective activity change your perspective on the importance of personalized medication dosages?

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Question 3

How did creating and solving your own problems in the Concentration Calculation Challenge deepen your understanding of the C1V1 = C2V2 formula and its applications in medication dosages?

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Question 4

What were the most significant challenges you encountered while designing your personalized dosage calculator, and how did you overcome them?

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Question 5

To what extent do you agree with the statement: "attention to detail is crucial for safe and effective medication delivery?"

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