How are evidence and reasoning similar and different?

Advanced – Evidence and Reasoning Session 1

Session Goals:

  • Teachers will understand the different and overlapping roles evidence and reasoning play in supporting a claim.
  • Teachers will be able to define evidence and reasoning. 
  • Teachers will be able to identify how students are using evidence and reasoning in oral and written arguments. 

Session Slides

Advanced Evidence and Reasoning Session 1 PDF

Agenda

  1. Video: Introduction to Module
  2. Discussion: Evidence and Reasoning
  3. Presentation: Evidence and Reasoning, Definitions and Challenges
  4. Activity: Identify Evidence and Reasoning in a Written Argument
  5. Takeaways

*Extension- Try it with your students!


1. Video: Introduction to Module

Watch a segment (0:00-2:30) of a small group discussion considering student use of evidence and reasoning in the video below.

Discussion Questions

  • What evidence do students use in their discussion?
  • How do students use this evidence?
  • What reasoning do students use in this discussion?​

2. ​Discussion: Evidence and Reasoning

Ask teachers to come up with their own definition of evidence and reasoning. Guiding questions could include:

  • How did you identify evidence in the previous activity?
  • How would you define evidence?
  • How did you identify reasoning in the previous activity?
  • How would you define reasoning? 

3. ​Presentation: Evidence and Reasoning, Definitions and Challenges

Define evidence and reasoning. ​Emphasize that both can be challenging for students and they will need support incorporating evidence and reasoning into their arguments. Highlight both are a justification for a claim. The distinction provides a framework that is helpful but can be difficult to distinguish in practice​.

Evidence is information about the natural world that is used to support a claim. In a scientific argument, evidence often consists of data, which can be measurements and observations.

  • Data becomes evidence when it is used to support a claim.
  • The quality of the evidence supporting a claim can be more important than the quantity.
  • Quality of evidence depends on a variety of factors, including reliability of the source and reproducibility.

Reasoning is the process of making clear how your evidence supports your claim. 

  • In scientific argumentation, clear reasoning can include using scientific ideas or principles to make logical connections between evidence and a claim.
  • The overall quality of an argument is dependent on having strong evidence and clear reasoning. 
Two students are participating in a classroom activity

4. Activity: Identify Evidence and Reasoning in a Written Argument

The Task:

  • Read each of the 4 student arguments on the Sample Student Argument handout. 
  • Working in pairs or small groups, respond to the discussion questions.

Discussion Questions:

  • Identify how students are using evidence and reasoning in their arguments
  • What challenges did you face in identifying student reasoning?
  • What challenges did you face in identifying student reasoning?
  • What challenges do your students have with evidence and reasoning?​

Science Content:

  • Earthquakes travel through the Earth in waves. The waves begin at the focus, which is where the earthquake starts underground.
  • The epicenter is directly above the focus on the Earth’s surface.
  • More powerful earthquakes happen when the focus of the earthquake occurs in soft ground material, because the earthquake waves can travel more easily through soft ground.
Data Table about Earthquakes
Data table provided to students

5. Takeaways

  • Evidence is information about the natural world that is used to support a claim. In a scientific argument, evidence often consists of data, which can be measurements and observations.
  • Evidence and reasoning are both part of the justification for a claim. There’s not always a clear distinction between evidence and reasoning, but the important thing to focus on is the role they both play in supporting a claim.
  • Reasoning is the process of making clear how your evidence supports your claim. Clear reasoning can include using scientific ideas or principles to make logical connections between evidence and a claim.

*Extension – Try it with your students!

The task:

  • Ask your students to write an argument using evidence and reasoning.
  • For the next meeting, share an example, and identify the evidence and reasoning students used.
  • Prepare to discuss the challenges you encountered in identifying and distinguishing between evidence and reasoning in student written arguments.

View Other Sessions

Advanced Evidence & Reasoning

Session NameDescriptionLength
Session #1: How are evidence and reasoning similar and different?This session explores the overlap between evidence and reasoning in an argument, and helps teachers distinguish between the them.45 minutes
Session #2: How can you support student use of evidence in a scientific argument?This session introduces the evidence rubric to help teachers provide feedback on student arguments.45 minutes
​Session #3: How can you support student use of reasoning in a scientific argument?This session introduces the reasoning rubric to help teachers provide feedback on student arguments.45 minutes
Session #4: How can you create classroom activities to target whole class challenges with evidence and reasoning?This session provides teachers with work time to develop a lesson that supports student challenges with using evidence and/or reasoning.45 minutes