BIOLOGY FOR LIFE
  • Syllabus
    • Core >
      • 1: Cell Biology >
        • 1.1: Introduction to Cells
        • 1.2: Ultrastructure of Cells
        • 1.3: Membrane Structure
        • 1.4: Membrane Transport
        • 1.5: The Origin of Cells
        • 1.6: Cell Division
      • 2: Molecular Biology >
        • 2.1: Molecules to Metabolism
        • 2.2: Water
        • 2.3: Carbohydrates and Lipids
        • 2.4: Proteins
        • 2.5: Enzymes
        • 2.6: DNA and RNA
        • 2.7: DNA Replication, Transcription and Translation
        • 2.8: Cell Respiration
        • 2.9: Photosynthesis
      • 3: Genetics >
        • 3.1: Genes
        • 3.2: Chromosomes
        • 3.3: Meiosis
        • 3.4: Inheritance
        • 3.5: Genetic Modification and Biotechnology
      • 4: Ecology >
        • 4.1: Species, Communities and Ecosystems
        • 4.2: Energy Flow
        • 4.3: Carbon Cycling
        • 4.4: Climate Change
      • 5: Evolution and Biodiversity >
        • 5.1: Evidence for Evolution
        • 5.2: Natural Selection
        • 5.3: Classification and Biodiversity
        • 5.4: Cladistics
      • 6: Human Physiology >
        • 6.1: Digestion and Absorption
        • 6.2: The Blood System
        • 6.3: Defense Against Infectious Disease
        • 6.4: Gas Exchange
        • 6.5: Neurons and Synapses
        • 6.6: Hormones, Homeostasis and Reproduction
    • Higher Level >
      • 7: Nucleic Acids >
        • 7.1: DNA Structure and Replication
        • 7.2: Transcription and Gene Expression
        • 7.3: Translation
      • 8: Metabolism, Cell Respiration & Photosynthesis >
        • 8.1: Metabolism
        • 8.2: Cell Respiration
        • 8.3: Photosynthesis
      • 9: Plant Biology >
        • 9.1: Transport in the Xylem of Plants
        • 9.2: Transport in the Phloem of Plants
        • 9.3: Growth in Plants
        • 9.4: Reproduction in Plants
      • 10: Genetics and Evolution >
        • 10.1: Meiosis
        • 10.2: Inheritance
        • 10.3: Gene Pools and Speciation
      • 11: Animal Physiology >
        • 11.1: Antibody Production and Vaccination
        • 11.2: Movement
        • 11.3: Kidney and Osmoregulation
        • 11.4: Sexual Reproduction
    • Options >
      • D: Human Physiology >
        • D.1: Human Nutrition
        • D.2: Digestion
        • D.3: Functions of the Liver
        • D.4: The Heart
        • D.5: Hormones and Metabolism
        • D.6: Transport of Respiratory Gases
  • IB Requirements
    • Learner Profile
    • Group 4 Project
    • External Exam
    • Internal Assessment >
      • Personal Engagement
      • Exploration
      • Analysis
      • Evaluation
      • Communication
    • Extended Essay
  • Investigation Skills
    • Lab Safety
    • Microscopy
    • Lab Drawings
    • Data Tables
    • Measurement
    • Statistics >
      • Descriptive Statistics >
        • Skew
        • Measures of Central Tendancy
        • Measures of Spread
        • Pearson Correlation
      • Inferential Statistics >
        • T-Test
        • ANOVA
        • Kruskal-Wallis
        • X2 Test for Independence
        • X2 Goodness of Fit
    • Graphing >
      • Graphing with Excel
      • Interpreting Error Bars
    • Error Analysis
  • Course Info
    • Above & Beyond >
      • Biology Club
      • Pumpkin Carving
      • Scavenger Hunt
      • Science News
      • IB Bio Dance
      • Wood Duck Project
      • Invasive Crayfish Project
    • Assessment >
      • Class Grading IB Bio I
      • Class Grading IB Bio II
      • Daily Quizzes
      • Lab Practicals
    • Class Photos
    • Recommendations
    • Supplemental Reading
  • Contact
  • About
    • Philosophy
    • Resume
    • Reflection
    • Site Feedback
    • Favorite Quotes
    • AEF Blog
  • Expeditions
    • Bahamas (2009)
    • Trinidad (2010)
    • Trinidad (2011)
    • Ecuador (2012)
    • Trinidad (2013)
    • Peru (2014)
    • Bahamas (2015)
    • Peru (2016)
    • Costa Rica (2017)
    • Costa Rica (2018)
    • Arizona (2022)
    • Florida (2023)
  • Summer Ecology Research

Internal Assessment

In IB Biology,  students are tasked with the research, design, performance, and write up their own investigation. This project is known as an internal assessment (IA).  Students will spend 10 hours doing this investigation which will provide 20% of the overall assessment for the IB biology score (the IB score, not the class grade).

There is a large variety and range of possible investigations; each student must complete an investigation that is unique and adequately different from those of other students in the course.  Students can choose from:
  • Traditional hands-on experimental work, if necessary following strict ethical guidelines for both human and animal subjects
  • Database investigations in which students use a database to obtain data to process and analyse the information for the investigation.
  • Computer simulations in which students process and present the data in such a way that something new is revealed.

The Internal Assessment is assessed (that means ‘graded’) using very strict IB criteria.  All IB science teachers world-wide must use the same criteria and apply them in the same way—quite a challenge!!  To ensure that everyone is following the rules and applying the criteria correctly, schools must send samples of graded student lab reports to IB for monitoring.  If a teacher is being too hard or too soft, that teacher’s marks which were awarded to students will be adjusted accordingly. 

The IB Biology Internal Assessment is graded using five IB Internal Assessment Criteria.  A maximum score of 24 points* is possible, awarded for the following five criteria:  
  • Personal Engagement (up to 2 points)
  • Exploration (up to 6 points)
  • Analysis (up to 6 points)
  • Evaluation (up to 6 points)
  • Communication (up to 4 points)

*The points for the I.A. criteria are IB marks, not class grade book points.   

You can view the scoring rubric to read the levels of performance and indicators per level. The IB assessment models use mark-bands and advises teachers to use a "best-fit" approach in deciding the appropriate mark for a particular criterion. 

At SHS, the students complete the Internal Assessment during the first semester of the second year of IB Biology. The IA project is is broken into discrete "chunks" so that students are not overwhelmed by the magnitude of the project and so that there is ample time for asking questions, getting feedback and completing the experiments.  Under no circumstances should a student be procrastinating on this project or surprised by an upcoming deadline.  Here's the timeline for the 2022-2023 school year with 
links to the documents used in our class to help development of the final paper.  
Date
Task
September 12, 2022
​Intro to the Internal Assessment and Problem question selection
September 23, 2022
Proposed problem question due 
first come, first serve – since students can’t have the same problem question as others
October 03, 2022
Teacher approval for problem question
Intro to background research task
October 14, 2022
Background research due
Intro to methodology proposal
October 24, 2022
Methodology proposals due
​Week of November 07, 2022
Teacher approval of methodology
Intro to data collection expectations
Data collection plan due
December 16, 2022
Review common feedback related to data collection
Formatted raw data and data collection photos due
Review requirements for 50% draft
January 09, 2023
Review common feedback related to introduction and methods
50% draft due
Intro to descriptive data analysis
January 16, 2023
Review common feedback related to data analysis
Descriptive data analysis due
Intro to data presentation
January 26, 2023
Review common feedback related to data presentation
Data presentation draft due
Intro to inferential data analysis
February 02, 2023
Review common feedback related to inferential analysis
Inferential analysis due
​Intro to conclusion and evaluation
February 06, 2023
Conclusion and evaluation part 1 due
February 10, 2022
Conclusion and evaluation part 2 due
​Review common feedback related to the conclusion and evaluation
Week of February 13, 2023
​Compiling the final paper
Review IA scoring rubric
February 17, 2023
Final paper submission
​Declaration
A note to teachers and students about the IA:
Everything above 
is scored for completion, roughly 5-10 class lab points per task.  Something small like writing a problem question is worth 5 points, something bigger like the draft of the introduction would be worth 10 points.   The teacher will read and approve every problem question - once it is approved it is added to the list (which everyone can see) and if it's not approved (because it's too simple, too complex, not ethical, or lame...) then the student will be asked to try again.  A student cannot move on to the next step in the process until they complete the previous step.  Once a problem question has been approved, a student can't change it without discussion with the teacher.  

Common feedback is shared with all students but I, as the teacher, actually only spot check the details of a few of the students work.  For example, if I get 120 draft introductions turned in, I will randomly read 10 in detail - and anonymously share the feedback from those 10 with all 120 students.  Then, for the next section I will repeat with another (different) random 10 students.  I do this because there is absolutely NO WAY to read 120 students "in process" IA work.  Additionally, the IA is an ASSESSMENT and so per IB guidelines I can't be providing specific feedback to individual students.  Students can absolutely talk to me, ask questions, get help.... but it has to be on their initiative not mine. ​​


If you are a teacher, please email me if you'd like to see annotated samples. ​
I give many of my IB Biology resources away, for the benefit of students and teachers around the world. 
If you've found the materials helpful, please consider making a contribution of any amount
to 
this Earthwatch Expedition Fund. 

​Did I forget something?  Know of a mistake? Have a suggestion?  Let me know by emailing me here.

Before using any of the files available on this site,
​please familiarize yourself with the 
Creative Commons Attribution License. 
​​​It prohibits the use of any material on this site for commercial  purposes of any kind.  ​


"When we try to pick out anything by itself, we find it hitched to everything else in the Universe." 
 John Muir,   1911
  • Syllabus
    • Core >
      • 1: Cell Biology >
        • 1.1: Introduction to Cells
        • 1.2: Ultrastructure of Cells
        • 1.3: Membrane Structure
        • 1.4: Membrane Transport
        • 1.5: The Origin of Cells
        • 1.6: Cell Division
      • 2: Molecular Biology >
        • 2.1: Molecules to Metabolism
        • 2.2: Water
        • 2.3: Carbohydrates and Lipids
        • 2.4: Proteins
        • 2.5: Enzymes
        • 2.6: DNA and RNA
        • 2.7: DNA Replication, Transcription and Translation
        • 2.8: Cell Respiration
        • 2.9: Photosynthesis
      • 3: Genetics >
        • 3.1: Genes
        • 3.2: Chromosomes
        • 3.3: Meiosis
        • 3.4: Inheritance
        • 3.5: Genetic Modification and Biotechnology
      • 4: Ecology >
        • 4.1: Species, Communities and Ecosystems
        • 4.2: Energy Flow
        • 4.3: Carbon Cycling
        • 4.4: Climate Change
      • 5: Evolution and Biodiversity >
        • 5.1: Evidence for Evolution
        • 5.2: Natural Selection
        • 5.3: Classification and Biodiversity
        • 5.4: Cladistics
      • 6: Human Physiology >
        • 6.1: Digestion and Absorption
        • 6.2: The Blood System
        • 6.3: Defense Against Infectious Disease
        • 6.4: Gas Exchange
        • 6.5: Neurons and Synapses
        • 6.6: Hormones, Homeostasis and Reproduction
    • Higher Level >
      • 7: Nucleic Acids >
        • 7.1: DNA Structure and Replication
        • 7.2: Transcription and Gene Expression
        • 7.3: Translation
      • 8: Metabolism, Cell Respiration & Photosynthesis >
        • 8.1: Metabolism
        • 8.2: Cell Respiration
        • 8.3: Photosynthesis
      • 9: Plant Biology >
        • 9.1: Transport in the Xylem of Plants
        • 9.2: Transport in the Phloem of Plants
        • 9.3: Growth in Plants
        • 9.4: Reproduction in Plants
      • 10: Genetics and Evolution >
        • 10.1: Meiosis
        • 10.2: Inheritance
        • 10.3: Gene Pools and Speciation
      • 11: Animal Physiology >
        • 11.1: Antibody Production and Vaccination
        • 11.2: Movement
        • 11.3: Kidney and Osmoregulation
        • 11.4: Sexual Reproduction
    • Options >
      • D: Human Physiology >
        • D.1: Human Nutrition
        • D.2: Digestion
        • D.3: Functions of the Liver
        • D.4: The Heart
        • D.5: Hormones and Metabolism
        • D.6: Transport of Respiratory Gases
  • IB Requirements
    • Learner Profile
    • Group 4 Project
    • External Exam
    • Internal Assessment >
      • Personal Engagement
      • Exploration
      • Analysis
      • Evaluation
      • Communication
    • Extended Essay
  • Investigation Skills
    • Lab Safety
    • Microscopy
    • Lab Drawings
    • Data Tables
    • Measurement
    • Statistics >
      • Descriptive Statistics >
        • Skew
        • Measures of Central Tendancy
        • Measures of Spread
        • Pearson Correlation
      • Inferential Statistics >
        • T-Test
        • ANOVA
        • Kruskal-Wallis
        • X2 Test for Independence
        • X2 Goodness of Fit
    • Graphing >
      • Graphing with Excel
      • Interpreting Error Bars
    • Error Analysis
  • Course Info
    • Above & Beyond >
      • Biology Club
      • Pumpkin Carving
      • Scavenger Hunt
      • Science News
      • IB Bio Dance
      • Wood Duck Project
      • Invasive Crayfish Project
    • Assessment >
      • Class Grading IB Bio I
      • Class Grading IB Bio II
      • Daily Quizzes
      • Lab Practicals
    • Class Photos
    • Recommendations
    • Supplemental Reading
  • Contact
  • About
    • Philosophy
    • Resume
    • Reflection
    • Site Feedback
    • Favorite Quotes
    • AEF Blog
  • Expeditions
    • Bahamas (2009)
    • Trinidad (2010)
    • Trinidad (2011)
    • Ecuador (2012)
    • Trinidad (2013)
    • Peru (2014)
    • Bahamas (2015)
    • Peru (2016)
    • Costa Rica (2017)
    • Costa Rica (2018)
    • Arizona (2022)
    • Florida (2023)
  • Summer Ecology Research