Mystery Juice (Grades 6-8)

Using an inquiry approach, students will develop an investigation to determine the difference between two juices. Food safety will be discussed in relation to the results of the investigations. Students will have the opportunity to discover how pasteurization reduces the number of microorganisms in a food such as juice.

Grades
6 – 8
TX: Grades 6 – 12
Estimated Time
Three 45-minute class periods
Updated
January 31, 2024

Background

Lesson Activities

Credits

Author

Food and Drug Association (FDA) and National Science Teaching Association (NSTA)

Acknowledgements

The Science and Our Food Supply Curriculum was brought to you by the Food and Drug Administration Center for Food Safety and Applied Nutrition and the National Science Teaching Association.

  • FDA Education Team Leader Food Safety Initiative: Marjorie L. Davidson
  • FDA Science and Our Food Supply Project Director: Louise H. Dickerson
  • FDA/NSTA Associate Executive Director and Science and Our Food Supply Program Director: Christina Gorski
  • FDA/NSTA Science and Our Food Supply Program Assistant: Jill Heywood

Standards

Texas Content Area Standards

  • Principles of Agriculture, Food, and Natural Resources: 130.2.c.1

    The student demonstrates professional standards/employability skills as required by business and industry. The student is expected to:

    • Principles of Agriculture, Food, and Natural Resources: 130.2.c.1.B: apply competencies related to resources, information, interpersonal skills, problem solving, critical thinking, and systems of operation in agriculture, food, and natural resources.
  • Principles of Agriculture, Food, and Natural Resources: 130.2.c.4

    The student explains the historical, current, and future significance of the agriculture, food, and natural resources industry. The student is expected to:

    • Principles of Agriculture, Food, and Natural Resources: 130.2.c.4.B: analyze the scope of agriculture, food, and natural resources and its effect upon society.
  • Principles of Agriculture, Food, and Natural Resources: 130.2.c.6

    The student demonstrates appropriate personal and communication skills. The student is expected to:

    • Principles of Agriculture, Food, and Natural Resources: 130.2.c.6.A: demonstrate written and oral communication skills appropriate for formal and informal situations such as prepared and extemporaneous presentations.
    • Principles of Agriculture, Food, and Natural Resources: 130.2.c.6.B: demonstrate effective listening skills appropriate for formal and informal situations.
  • Principles of Agriculture, Food, and Natural Resources: 130.2.c.7

    The student applies appropriate research methods to agriculture, food, and natural resources topics. The student is expected to:

    • Principles of Agriculture, Food, and Natural Resources: 130.2.c.7.B: use a variety of resources for research and development.
    • Principles of Agriculture, Food, and Natural Resources: 130.2.c.7.C: describe scientific methods of research.
    • Principles of Agricultures, Food, and Natural Resources: 130.2.c.7.A: discuss major research and developments in the fields of agriculture, food, and natural resources.
  • Principles of Agriculture, Food, and Natural Resources: 130.2.c.13

    The student describes the principles of food products and processing systems. The student is expected to:

    • Principles of Agriculture, Food, and Natural Resources: 130.2.c.13.A: evaluate food products and processing systems.
    • Principles of Agriculture, Food, and Natural Resources: 130.2.c.13.B: determine trends in world food production.
    • Principles of Agriculture, Food, and Natural Resources: 130.2.c.13.C: discuss current issues in food production.
    • Principles of Agriculture, Food, and Natural Resources: 130.2.c.13.D: use tools, equipment, and personal protective equipment common to food products and processing systems.
  • ELA: 8.110.24.b.1

    Developing and sustaining foundational language skills: listening, speaking, discussion, and thinking- oral language. The student develops oral language through listening, speaking, and discussion.

    • ELA: 8.110.24.b.1.B: follow and give complex oral instructions to perform specific tasks, answer questions, or solve problems
    • ELA: 8.110.24.b.1.D: participate collaboratively in discussions, plan agendas with clear goals and deadlines, set time limits for speakers, take notes, and vote on key issues
  • English II: 110.37.c.4

    Comprehension skills: listening, speaking, reading, writing, and thinking using multiple texts. The student uses metacognitive skills to both develop and deepen comprehension of increasingly complex texts.

    • English II: 110.37.c.4.H: synthesize information from multiple texts to create new understanding
  • Social Studies: 6.113.18.c.21

    Social studies skills. The student communicates in written, oral, and visual forms. The student is expected to:

    • Social Studies: 6.113.18.c.21.C: express ideas orally based on research and experiences
  • Science: 6.112.26.b.1

    Scientific and engineering practices. The student, for at least 40% of instructional time, asks questions, identifies problems, and plans and safely conducts classroom, laboratory, and field investigations to answer questions, explain phenomena, or design solutions using appropriate tools and models. The student is expected to:

    • Science: 6.112.26.b.1.A: ask questions and define problems based on observations or information from text, phenomena, models, or investigations
    • Science: 6.112.26.b.1.C: use appropriate safety equipment and practices during laboratory, classroom, and field investigations as outlined in Texas Education Agency-approved safety standards;
    • Science: 6.112.26.b.1.E: collect quantitative data using the International System of Units (SI) and qualitative data as evidence;
    • Science: 6.112.26.b.1.F: construct appropriate tables, graphs, maps, and charts using repeated trials and means to organize data;
    • Science: 6.112.26.b.1.H: distinguish between scientific hypotheses, theories, and laws.
  • Social Studies: 6.113.18.c.22

    Social studies skills. The student uses problem-solving and decision-making skills, working independently and with others. The student is expected to:

    • Social Studies: 6.113.18.c.22.B: use problem-solving and decision-making processes to identify a problem, gather information, list and consider options, consider advantages and disadvantages, choose and implement a solution, and evaluate the effectiveness of the solution
  • Science: 6.112.26.b.3

    Scientific and engineering practices. The student develops evidence-based explanations and communicates findings, conclusions, and proposed solutions. The student is expected to:

    • Science: 6.112.26.b.3.A: develop explanations and propose solutions supported by data and models and consistent with scientific ideas, principles, and theories;
    • Science: 6.112.26.b.3.B: communicate explanations and solutions individually and collaboratively in a variety of settings and formats; and
  • Science: 6.112.26.b.4

    Scientific and engineering practices. The student knows the contributions of scientists and recognizes the importance of scientific research and innovation on society. The student is expected to:

    • Science: 6.112.26.b.4.A: relate the impact of past and current research on scientific thought and society, including the process of science, cost-benefit analysis, and contributions of diverse scientists as related to the content;
    • Science: 6.112.26.b.4.B: make informed decisions by evaluating evidence from multiple appropriate sources to assess the credibility, accuracy, cost-effectiveness, and methods used; and
    • Science: 6.112.26.b.4.C: research and explore resources such as museums, libraries, professional organizations, private companies, online platforms, and mentors employed in a science, technology, engineering, and mathematics (STEM) field to investigate STEM careers.
  • Science: 6.112.26.b.5

    Recurring themes and concepts. The student understands that recurring themes and concepts provide a framework for making connections across disciplines. The student is expected to:

    • Science: 6.112.26.b.5.A: identify and apply patterns to understand and connect scientific phenomena or to design solutions;
  • Science: 6.112.26.b.6

    Matter and energy. The student knows that matter is made of atoms, can be classified according to its properties, and can undergo changes. The student is expected to:

    • Science: 6.112.26.b.6.D: compare the density of substances relative to various fluids; and
    • Science: 6.112.26.b.6.E: identify the formation of a new substance by using the evidence of a possible chemical change, including production of a gas, change in thermal energy, production of a precipitate, and color change.
  • Social Studies: 7.113.19.c.20

    Social studies skills. The student applies critical-thinking skills to organize and use information acquired through established research methodologies from a variety of valid sources, including technology. The student is expected to:

    • Social Studies: 7.113.19.c.20.E: formulate and communicate visually, orally, or in writing a claim supported by evidence and reasoning related to a social studies topic
  • Social Studies: 7.113.19.c.23

    Social studies skills. The student uses problem-solving and decision-making skills, working independently and with others. The student is expected to:

    • Social Studies: 7.113.19.c.23.B: use problem-solving and decision-making processes to identify a problem, gather information, list and consider options, consider advantages and disadvantages, choose and implement a solution, and evaluate the effectiveness of the solution
  • Science: 6.112.26.b.12

    Organisms and environments. The student knows that interdependence occurs between living systems and the environment. The student is expected to:

    • Science: 6.112.26.b.12.B: describe and give examples of predatory, competitive, and symbiotic relationships between organisms, including mutualism, parasitism, and commensalism;
  • Science: 6.112.26.b.13

    Organisms and environments. The student knows that organisms have an organizational structure and variations can influence survival of populations. The student is expected to:

    • Science: 6.112.26.b.13.A: describe the historical development of cell theory and explain how organisms are composed of one or more cells, which come from pre-existing cells and are the basic unit of structure and function;
    • Science: 6.112.26.b.13.B: identify and compare the basic characteristics of organisms, including prokaryotic and eukaryotic, unicellular and multicellular, and autotrophic and heterotrophic; and
    • Science: 6.112.26.b.13.C: describe how variations within a population can be an advantage or disadvantage to the survival of a population as environments change
  • Social Studies: 8.113.20.c.29

    Social studies skills. The student applies critical-thinking skills to organize and use information acquired through established research methodologies from a variety of valid sources, including technology. The student is expected to:

    • Social Studies: 8.113.20.c.29.E: formulate and communicate visually, orally, or in writing a claim supported by evidence and reasoning related to a social studies topic
  • Social Studies: 8.113.20.c.31

    Social studies skills. The student uses problem-solving and decision-making skills, working independently and with others. The student is expected to:

    • Social Studies: 8.113.20.c.31.B: use problem-solving and decision-making processes to identify a problem, gather information, list and consider options, consider advantages and disadvantages, choose and implement a solution, and evaluate the effectiveness of the solution
  • Science: 7.112.27.b.1

    Scientific and engineering practices. The student, for at least 40% of instructional time, asks questions, identifies problems, and plans and safely conducts classroom, laboratory, and field investigations to answer questions, explain phenomena, or design solutions using appropriate tools and models. The student is expected to:

    • Science: 7.112.27.b.1.A: ask questions and define problems based on observations or information from text, phenomena, models, or investigations;
    • Science: 7.112.27.b.1.C: use appropriate safety equipment and practices during laboratory, classroom, and field investigations as outlined in Texas Education Agency-approved safety standards;
    • Science: 7.112.27.b.1.E: collect quantitative data using the International System of Units (SI) and qualitative data as evidence;
    • Science: 7.112.27.b.1.F: construct appropriate tables, graphs, maps, and charts using repeated trials and means to organize data
    • Science: 7.112.27.b.1.H: distinguish between scientific hypotheses, theories, and laws.
  • Science: 7.112.27.b.3

    Scientific and engineering practices. The student develops evidence-based explanations and communicates findings, conclusions, and proposed solutions. The student is expected to:

    • Science: 7.112.27.b.3.A: develop explanations and propose solutions supported by data and models and consistent with scientific ideas, principles, and theories;
    • Science: 7.112.27.b.3.B: communicate explanations and solutions individually and collaboratively in a variety of settings and formats; and
  • Science: 7.112.27.b.4

    Scientific and engineering practices. The student knows the contributions of scientists and recognizes the importance of scientific research and innovation on society. The student is expected to:

    • Science: 7.112.27.b.4.A: relate the impact of past and current research on scientific thought and society, including the process of science, cost-benefit analysis, and contributions of diverse scientists as related to the content;
    • Science: 7.112.27.b.4.B: make informed decisions by evaluating evidence from multiple appropriate sources to assess the credibility, accuracy, cost-effectiveness, and methods used; and
    • Science: 7.112.27.b.4.C: research and explore resources such as museums, libraries, professional organizations, private companies, online platforms, and mentors employed in a science, technology, engineering, and mathematics (STEM) field to investigate STEM careers
  • Science: 7.112.27.b.5

    Recurring themes and concepts. The student understands that recurring themes and concepts provide a framework for making connections across disciplines. The student is expected to:

    • Science: 7.112.27.b.5.A: identify and apply patterns to understand and connect scientific phenomena or to design solutions;
  • Science: 7.112.27.b.6

    Matter and energy. The student distinguishes between elements and compounds, classifies changes in matter, and understands the properties of solutions. The student is expected to:

    • Science: 7.112.27.b.6.C: distinguish between physical and chemical changes in matter;
  • Science: 7.112.27.b.12

    Organisms and environments. The student understands that ecosystems are dependent upon the cycling of matter and the flow of energy. The student is expected to:

    • Science: 7.112.27.b.12.B: describe how ecosystems are sustained by the continuous flow of energy and the recycling of matter and nutrients within the biosphere.
  • Science: 7.112.27.b.14

    Organisms and environments. The student knows how the taxonomic system is used to describe relationships between organisms. The student is expected to:

    • Science: 7.112.27.b.14.B: describe the characteristics of the recognized kingdoms and their importance in ecosystems such as bacteria aiding digestion or fungi decomposing organic matter.
  • Science: 8.112.28.b.1

    Scientific and engineering practices. The student, for at least 40% of instructional time, asks questions, identifies problems, and plans and safely conducts classroom, laboratory, and field investigations to answer questions, explain phenomena, or design solutions using appropriate tools and models. The student is expected to:

    • Science: 8.112.28.b.1.A: ask questions and define problems based on observations or information from text, phenomena, models, or investigations;
    • Science: 8.112.28.b.1.C: use appropriate safety equipment and practices during laboratory, classroom, and field investigations as outlined in Texas Education Agency-approved safety standards;
    • Science: 8.112.28.b.1.E: collect quantitative data using the International System of Units (SI) and qualitative data as evidence;
    • Science: 8.112.28.b.1.F: construct appropriate tables, graphs, maps, and charts using repeated trials and means to organize data;
    • Science: 8.112.28.b.1.H: distinguish between scientific hypotheses, theories, and laws.
  • Science: 8.112.28.b.3

    Scientific and engineering practices. The student develops evidence-based explanations and communicates findings, conclusions, and proposed solutions. The student is expected to:

    • Science: 8.112.28.b.3.A: develop explanations and propose solutions supported by data and models and consistent with scientific ideas, principles, and theories;
    • Science: 8.112.28.b.3.B: communicate explanations and solutions individually and collaboratively in a variety of settings and formats; and
  • Science: 8.112.28.b.4

    Scientific and engineering practices. The student knows the contributions of scientists and recognizes the importance of scientific research and innovation on society. The student is expected to

    • Science: 8.112.28.b.4.A: relate the impact of past and current research on scientific thought and society, including the process of science, cost-benefit analysis, and contributions of diverse scientists as related to the content;
    • Science: 8.112.28.b.4.B: make informed decisions by evaluating evidence from multiple appropriate sources to assess the credibility, accuracy, cost-effectiveness, and methods used; and
    • Science: 8.112.28.b.4.C: research and explore resources such as museums, libraries, professional organizations, private companies, online platforms, and mentors employed in a science, technology, engineering, and mathematics (STEM) field to investigate STEM careers.
  • Science: 8.112.28.b.5

    Recurring themes and concepts. The student understands that recurring themes and concepts provide a framework for making connections across disciplines. The student is expected to:

    • Science: 8.112.28.b.5.A: identify and apply patterns to understand and connect scientific phenomena or to design solutions;
  • Science: 8.112.28.b.6

    Matter and energy. The student understands that matter can be classified according to its properties and matter is conserved in chemical changes that occur within closed systems. The student is expected to:

    • Science: 8.112.28.b.6.A: explain by modeling how matter is classified as elements, compounds, homogeneous mixtures, or heterogeneous mixtures;
  • Science: 8.112.28.b.11

    Earth and space. The student knows that natural events and human activity can impact global climate. The student is expected to:

    • Science: 8.112.28.b.11.C: describe the carbon cycle.
  • ELA: 6.110.22.b.1

    Developing and sustaining foundational language skills: listening, speaking, discussion, and thinking--oral language. The student develops oral language through listening, speaking, and discussion. The student is expected to:

    • ELA: 6.110.22.b.1.B: follow and give oral instructions that include multiple action steps
    • ELA: 6.110.22.b.1.C: give an organized presentation with a specific stance and position, employing eye contact, speaking rate, volume, enunciation, natural gestures, and conventions of language to communicate ideas effectively
    • ELA: 6.110.22.b.1.D: participate in student-led discussions by eliciting and considering suggestions from other group members, taking notes, and identifying points of agreement and disagreement.
  • ELA: 6.110.22.b.12

    Inquiry and research: listening, speaking, reading, writing, and thinking using multiple texts. The student engages in both short-term and sustained recursive inquiry processes for a variety of purposes. The student is expected to:

    • ELA: 6.110.22.b.12.A: generate student-selected and teacher-guided questions for formal and informal inquiry
    • ELA: 6.110.22.b.12.D: identify and gather relevant information from a variety of sources
    • ELA: 6.110.22.b.12.F: synthesize information from a variety of sources
    • ELA: 6.110.22.b.12.J: use an appropriate mode of delivery, whether written, oral, or multimodal, to present results
  • ELA: 7.110.23.b.1

    Developing and sustaining foundational language skills: listening, speaking, discussion, and thinking--oral language. The student develops oral language through listening, speaking, and discussion. The student is expected to:

    • ELA: 7.110.23.b.1.B: follow and give complex oral instructions to perform specific tasks, answer questions, or solve problems
    • ELA: 7.110.23.b.1.D: engage in meaningful discourse and provide and accept constructive feedback from others
  • ELA: 7.110.23.b.12

    Inquiry and research: listening, speaking, reading, writing, and thinking using multiple texts. The student engages in both short-term and sustained recursive inquiry processes for a variety of purposes. The student is expected to:

    • ELA: 7.110.23.b.12.A: generate student-selected and teacher-guided questions for formal and informal inquiry
    • ELA: 7.110.23.b.12.D: identify and gather relevant information from a variety of sources
    • ELA: 7.110.23.b.12.F: synthesize information from a variety of sources
    • ELA: 7.110.23.b.12.J: use an appropriate mode of delivery, whether written, oral, or multimodal, to present results
  • ELA: 8.110.24.b.12

    Inquiry and research: listening, speaking, reading, writing, and thinking using multiple texts. The student engages in both short-term and sustained recursive inquiry processes for a variety of purposes. The student is expected to:

    • ELA: 8.110.24.b.12.A: generate student-selected and teacher-guided questions for formal and informal inquiry
    • ELA: 8.110.24.b.12.D: identify and gather relevant information from a variety of sources
    • ELA: 8.110.24.b.12.F: synthesize information from a variety of sources
    • ELA: 8.110.24.b.12.J: use an appropriate mode of delivery, whether written, oral, or multimodal, to present results
  • Technology Applications: 126.17.c.1

    Computational thinking--foundations. The student explores the core concepts of computational thinking, a set of problem-solving processes that involve decomposition, pattern recognition, abstraction, and algorithms. The student is expected to:

    • Technology Applications: 126.17.c.1.D: design a plan collaboratively using visual representation to document a problem, possible solutions, and an expected timeline for the development of a coded solution