CER (Claim, Evidence, Reasoning) in Biology

Amoeba Sisters
12 Nov 202007:39
EducationalLearning
32 Likes 10 Comments

TLDRThe script discusses the importance of curiosity and the scientific method, using the example of red-eared slider turtles disappearing in winter. It introduces the CER (Claim, Evidence, Reasoning) framework for scientific explanations, illustrating how it can be applied to understand the turtles' behavior and survival strategies during freezing conditions.

Takeaways
  • 🌱 The speaker admits to not being skilled in areas like cooking, organizing, and crafts, and acknowledges the importance of maintaining a growth mindset for skill development.
  • 🎨 The speaker's art and audio skills have improved over time through practice, demonstrating the value of persistence and learning.
  • 🤔 The speaker values curiosity and questions as the starting point for scientific investigations and personal growth.
  • 🐢 A childhood memory of red-eared sliders disappearing in winter leads to a series of questions about their behavior and survival strategies.
  • ❄️ The speaker ponders the survival of red-eared sliders when their pond freezes over, highlighting the need for scientific inquiry to answer such questions.
  • 🔍 The speaker introduces the CER (Claim, Evidence, Reasoning) framework as a tool for developing scientific explanations, applicable across various subjects.
  • 📚 The CER framework is popular in science classrooms and helps in forming reliable conclusions after an investigation.
  • 🔬 The speaker's example of red-eared sliders uses the CER framework to hypothesize their behavior during winter based on observations and research.
  • 📷 Observations and research are key components of evidence in the CER framework, with the speaker emphasizing the importance of peer-reviewed sources.
  • 🧩 The speaker explains the concept of brumation in red-eared sliders as a form of winter survival, which involves physiological changes allowing them to live in low-oxygen environments.
  • 🧠 The reasoning phase of the CER framework is crucial, as it connects the evidence to the claim, providing a logical explanation for the observed phenomena.
  • 🌐 The CER framework is not limited to academic settings; it can also be applied to critically evaluate claims in everyday life.
Q & A

  • What are some skills that the speaker admits they are not great at?

    -The speaker admits they are not great at cooking, organizing, and crafts.

  • What does the speaker believe about the potential to grow skills over time?

    -The speaker believes that with interest and practice, skills can be developed over time, as evidenced by their improvement in art and audio.

  • What is the speaker's approach to maintaining curiosity?

    -The speaker maintains curiosity by asking questions and exploring topics that interest them, even if they don't necessarily have a background in those areas.

  • What is the mystery the speaker is trying to solve about the red-eared sliders?

    -The speaker is curious about where the red-eared sliders go during winter when the pond surface freezes over.

  • What is the scientific process discussed in the speaker's Nature of Science video?

    -The speaker mentions that the scientific process is often not linear and involves considering various factors when planning a scientific investigation.

  • What is the CER framework mentioned in the script?

    -The CER framework stands for Claim, Evidence, and Reasoning, which is used for scientific explanations and is popular in science classrooms.

  • How does the speaker plan to use the CER framework in their investigation?

    -The speaker plans to use the CER framework to develop a reliable conclusion after an investigation, stating the claim, evidence supporting it, and reasoning for how the evidence supports the claim.

  • What observations did the speaker make during their investigation of the red-eared sliders?

    -The speaker observed that the turtles remained in the water when the pond froze over and that the same turtles were present after the winter was over.

  • What is brumation and how does it relate to the red-eared sliders' survival?

    -Brumation is a state similar to hibernation where ectotherms like red-eared sliders can handle a low oxygen environment, slow down their metabolic needs, and undergo physiological changes to survive.

  • How does the speaker ensure the reliability of the sources used in their investigation?

    -The speaker ensures the reliability of sources by examining whether they are peer-reviewed science sources from a science journal, written by experts in the field.

  • How can the CER framework be applied beyond the context of a biology course?

    -The CER framework can be applied to daily life to evaluate claims made by others or found online, by considering if there is evidence to support the claim and reasoning for how the evidence supports the claim.

Outlines
00:00
🐢 Pond Turtle Mystery: Winter Survival

This paragraph introduces the speaker's curiosity about the natural world, focusing on a childhood observation of red-eared sliders disappearing from a Texas pond during winter. The speaker ponders whether these turtles migrate or hibernate and how they survive when the pond surface freezes. The paragraph sets the stage for a scientific investigation using the Claim, Evidence, Reasoning (CER) framework. The speaker emphasizes the importance of curiosity in driving scientific inquiry and the non-linear nature of the scientific process.

05:01
🌬️ Brumation and Turtle Survival: Applying CER

In this paragraph, the speaker delves deeper into the mystery of the red-eared sliders' winter survival, using the CER framework to structure their scientific explanation. The speaker's claim is that the turtles remain in the water and undergo brumation, a state similar to hibernation. Evidence supporting this claim includes qualitative observations of the turtles' behavior and research from peer-reviewed sources on brumation in freshwater turtles. The reasoning connects the turtles' observed inactivity during winter with the physiological changes associated with brumation, demonstrating how they can survive in a low-oxygen environment. The speaker concludes by highlighting the broader applicability of the CER framework to everyday life and critical thinking.

Mindmap
Keywords
💡Growth Mindset
A growth mindset refers to the belief that one's abilities and intelligence can be developed through dedication and hard work. In the video, the speaker mentions keeping a growth mindset, suggesting that even though they may not be naturally skilled at certain activities, they believe in the potential to improve with effort and practice. This concept is central to the theme of learning and curiosity.
💡Curiosity
Curiosity is the desire to learn or know more about something or someone. The speaker emphasizes the importance of curiosity as a driving force for learning and exploration. It is highlighted as a key trait that has helped them develop skills over time and is a central theme of the video, as it leads to asking questions and seeking answers.
💡Red-eared Sliders
Red-eared sliders are a species of semi-aquatic turtles native to the southeastern United States. The video uses red-eared sliders as an example to illustrate the process of scientific inquiry. The speaker's curiosity about these turtles' behavior during winter when their pond freezes over serves as the starting point for a scientific investigation.
💡Brumation
Brumation is a state of inactivity and metabolic depression in ectothermic animals similar to hibernation in mammals. The term is used in the script to explain how red-eared sliders survive the winter when their pond freezes over. It is a key concept in understanding the turtle's physiological adaptation to cold environments.
💡Scientific Investigation
A scientific investigation is a systematic approach to exploring questions and acquiring knowledge. The video script outlines the process of conducting a scientific investigation, emphasizing the importance of data collection and analysis in forming conclusions. It is a fundamental part of the video's narrative, illustrating the application of curiosity in a structured manner.
💡Claim, Evidence, Reasoning (CER)
CER is a framework used for constructing scientific explanations. The video explains how CER can be applied to organize conclusions from an investigation. The speaker uses the CER framework to develop a hypothesis about the turtles' behavior and to support it with evidence and reasoning, which is central to the video's educational message.
💡Peer-Reviewed Sources
Peer-reviewed sources are scholarly articles or papers that have been evaluated and approved by experts in the same field. The video script stresses the importance of using peer-reviewed sources for research to ensure the reliability of the information. This concept is crucial for establishing the credibility of the evidence used in the CER framework.
💡Metabolism
Metabolism refers to the chemical processes that occur within a living organism to maintain life. In the context of the video, the speaker discusses how red-eared sliders' metabolism slows down during brumation, which is an important physiological change that allows them to survive in low oxygen conditions.
💡Ectothermic
Ectothermic animals are those that rely on external sources to regulate their body temperature, unlike endothermic animals that generate their own heat. The video uses the term to describe red-eared sliders, indicating that their body temperature is influenced by the environment, which is relevant to their brumation behavior.
💡Hypothesis
A hypothesis is a proposed explanation for a phenomenon, made as a starting point for further investigation. Although not explicitly detailed in the script, the speaker's inquiry about the turtles' winter behavior could be considered a hypothesis that drives the scientific investigation discussed in the video.
💡Quantitative Data
Quantitative data refers to numerical information that can be measured and analyzed statistically. The video mentions the potential for obtaining quantitative data to demonstrate physiological changes in turtles during brumation. This type of data is important for providing concrete evidence in scientific research.
Highlights

The speaker admits to not being great at cooking, organizing, and crafts, but emphasizes the importance of maintaining a growth mindset.

Despite not being naturally interested in certain skills, the speaker acknowledges that with interest and effort, skills can be developed over time.

The speaker highlights the improvement in their art and audio skills over the years, demonstrating the value of practice.

Curiosity is presented as a key trait that the speaker has developed, contrasting it with other skills that have not been pursued.

A personal anecdote about red-eared sliders and their mysterious disappearance during winter is used to illustrate the speaker's curiosity.

The speaker questions the survival strategies of red-eared sliders when their pond freezes over, setting the stage for a scientific investigation.

The concept of CER (Claim, Evidence, Reasoning) is introduced as a framework for scientific explanations, applicable across various subjects.

The speaker explains how CER can be used to develop a reliable conclusion after a scientific investigation, emphasizing the importance of evidence.

The speaker uses the example of red-eared sliders to demonstrate how data collection and research can be used to support a claim within the CER framework.

Observations of turtle behavior and presence before and after winter are noted as key evidence in the investigation.

The speaker discusses the importance of examining the source of scientific information, advocating for peer-reviewed sources over personal opinions.

Research on brumation, a state similar to hibernation, is used to explain how red-eared sliders survive in low oxygen environments.

The speaker suggests that quantitative data could further support the claim if appropriate equipment and training were available.

The speaker organizes their conclusion using the CER framework, providing a clear claim, evidence, and reasoning based on their investigation.

The claim that red-eared sliders remain in the water and brumate during winter is supported by qualitative data and peer-reviewed research.

The speaker explains how the evidence of turtle behavior and physiological changes during brumation supports the claim.

The speaker concludes by encouraging the application of the CER framework in daily life to critically evaluate claims and evidence.

Transcripts

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Related Tags
CuriosityScience InquiryGrowth MindsetRed-eared SlidersTurtle BehaviorWinter SurvivalBrumationPeer-ReviewedCER FrameworkScientific MethodStay Curious