cognitive tools
DESCRIPTION
These are slides that I made for a lecture on cognitive tools.TRANSCRIPT
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Educational TechnologiesEducational Technologies
WS2006WS2006
Cognitive ToolsCognitive Tools
Martin [email protected]
Deutsches Forschungszentrum für Künstliche IntelligenzDeutsches Forschungszentrum für Künstliche Intelligenz
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2Source: Martin Homik Educational Technologies WS 2006/07
Approximate Plan of the Course Approximate Plan of the Course
18.10. Introduction25.10. Introduction to ActiveMath XML- Knowledge Representation 8.11. Student Modelling15.11. Web technologies and security22.11. Tutorial Planning and instructional design29.11. Media Principles 6.12. Interactive exercises13.12. Authoring tools, CTAT20.12. Diagnosis: model tracing and domain reasoning 10.1. Diagnosis: constraint based17.1. Tutorial dialogues24.1. Action analysis and Machine Learning techniques31.1. Cognitive tools 7.2. Meta-cognitive support14.2. Student projects
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3Source: Martin Homik Educational Technologies WS 2006/07
OutlineOutline
1. Repeat Cognitive Theory and Media Principles
2. From Cognitivism to Constructivism
3. Cognitive Tools
4. Examples simulations
learning diaries
concept mapping
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4Source: Martin Homik Educational Technologies WS 2006/07
Literature (look back “Media Principles)Literature (look back “Media Principles)
“The design of e-learning courses should be based on cognitive theory of how people learn and on scientifically valid research studies.”
This also implies the design of e-learning software.
Don’t rely on information delivery theory.
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5Source: Martin Homik Educational Technologies WS 2006/07
How do People Learn?How do People Learn?
Information processing through channels:
visual, auditory, haptic
Working memory is a limited capacity memory device
Learning = new knowledge and skills in working memory have to be integrated with existing knowledge in long-term memory
… called encoding.Active processing in working
memory is called rehearsal.Retrieve skills from long-term
memory back into working memory is called retrieval.
Mental processes transform information into knowledge and skills in memory
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6Source: Martin Homik Educational Technologies WS 2006/07
How e-Lessons Affect Human LearningHow e-Lessons Affect Human Learning
1. Selection and focus
2. Reduce cognitive load
3. Integration by encoding and rehearsal
4. Retrieval
5. Management via meta-cognitive skills
Knowledge fromLong-term-memory
NewInformation
ActiveProcessing
RemainingCapacity
Use instructional methods to guide information
… through the sensory of working memories
… to incorporated information into the existing knowledge in long-term memory:
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7Source: Martin Homik Educational Technologies WS 2006/07
Media Principles (Summary)Media Principles (Summary)
Multimedia principleUse words and graphics rather than words alone
Contiguity principlePlace corresponding words and graphics near each other
Modality principlePresent words as audio narration
Redundancy principlePresenting words in both text and audio narration can hurt learning
Coherence principleAdding interesting material can hurt learning
Personalization principleUse conversational style and virtual coaches
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8Source: Martin Homik Educational Technologies WS 2006/07
Other means to reduce cognitive loadOther means to reduce cognitive load
Training of patterns (Processes)
Offer different representations
Change between Abstractness and Concreteness
Provide examples and counterexamples
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9Source: Martin Homik Educational Technologies WS 2006/07
Learning Theories (look back)Learning Theories (look back)
ObjectivismInformation is externally referenced and delivered
BehaviorismStimulus/Response Coupling
CognitivismDiscover and model mental processes (cognitive theory)
Mainly reduce cognitive load
ConstructivismNo information delivery by teacher/tutor
Support creation of new knowledge that reflects the student’s comprehension and conception of the information
… knowledge is internally created!
Learner is in control (self-guided learning), Jonassen, 1981
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10Source: Martin Homik Educational Technologies WS 2006/07
Mapping Technologies to Learning TheoriesMapping Technologies to Learning Theories
Objectivism
Behaviorism
Constructivism
Cognitivism
MotorSkills
CognitiveTools
ProgrammedInstruction
ITS
Jonassen, 1981
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11Source: Martin Homik Educational Technologies WS 2006/07
What is a Cognitive Tool? What is a Cognitive Tool?
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12Source: Martin Homik Educational Technologies WS 2006/07
DefinitionDefinition
First introduced by Lajoie and Derry (1993)
Instruments included in a learning environment allowing learners to make cognitive processes and their results explicit.
They support cognitive processes by relieving working memory or
… presenting a structure for performing the process.
Also, they can perform a cognitive process automatically, allowing the learner to concentrate on another process first. (Joolingen, ITS 98)
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13Source: Martin Homik Educational Technologies WS 2006/07
Functions of Cognitive ToolsFunctions of Cognitive Tools
Do (automatically) complex computations (CAS)
Externalize reasoning processes (diaries)
Visualize reasoning processes (concept maps)
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14Source: Martin Homik Educational Technologies WS 2006/07
Key QuestionsKey Questions
How to design cognitive tools starting from the theory on discovery learning?
What are the characteristics of cognitive tools in terms of their impact on the learning process?
How to integrate cognitive tools in a simulation environment?
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15Source: Martin Homik Educational Technologies WS 2006/07
Discovery LearningDiscovery LearningConstructivist approach
Construct own knowledge by Experimenting with a domain
Inferring rules from the results of the experiments
In practice, hard to prove this theoryAssumption: Learners need also assistance and guidance
Specific skills are needed:Discovery skills: hypothesis generation, experiment design,
prediction, data analysis (De Jong & Van Joolingen, 1994)
Regulative skills: planning and monitoring (Njoo & De Jong, 1993)
Skills itself are learning goals
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16Source: Martin Homik Educational Technologies WS 2006/07
DilemmaDilemma
Discovery requires that the learner has sufficient freedom to select and interpret information
Any kind of support that limits this freedom in principle disrupts the nature of the discovery process
Check models of discovery learning:Newell and Simon (1972)
Simon and Lea (1974)
Qin and Simon (1988)
Klahr and Dunbar (1988)Discovery
Environment
CognitiveTool 1
CognitiveTool 2
? ?
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17Source: Martin Homik Educational Technologies WS 2006/07
Discovery Described as Dual Search SpacesDiscovery Described as Dual Search Spaces
Space of rules that are possible descriptions of the domain
Instance space which represents the data that can be collected in the domain
Hypothesis space Experiment space
Hypotheses can direct the search in experiment space
Results of the experiments can influence the search for new hypotheses
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18Source: Martin Homik Educational Technologies WS 2006/07
Search Strategies in Dual Search SpacesSearch Strategies in Dual Search Spaces
Theoriest Strategy:1. Start with hypotheses and use experiment space for
confirming or rejecting evidences.
2. If rejected, reformulate hypotheses and restart experiment
Experimenter Strategy:1. Collect data
2. Formulate Hypothesis
Observation: Main selection criterion lies in the prior knowledge
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19Source: Martin Homik Educational Technologies WS 2006/07
Decomposition of Hypothesis SpaceDecomposition of Hypothesis Space
Dual model is not modulo the learner/discoverer… in terms of prior knowledge
Reasoning inside LSS = Considering different alternatives
Crossing boundaries = Consider a new relationship
Learner hypothesis space
Target conceptual model
Effective learnersearch space
Universal hypothesis space
Contains all hypotheses thelearner possibly knows of and considers as good candidates
De Jong, Van Joolingen, 1998
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20Source: Martin Homik Educational Technologies WS 2006/07
Explaining Unsuccessful DiscoveryExplaining Unsuccessful Discovery
Learning processes may themselves be problematic (transformative/discovery, regulative)
Transformative processes relate directly to dual spaces:
… generalization/specification of hypotheses
… what kind of hypotheses to state
… what kind of experiments to perform
Constraints on both spaces can prevent discovery… e.g. only confirmation of hypotheses
Learners cannot find constraints:… e.g. vary only one variable at a time
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21Source: Martin Homik Educational Technologies WS 2006/07
Hypothesis Generation Sketchpad (SMISLE)Hypothesis Generation Sketchpad (SMISLE)
Problem: Lack of knowledge on basic elements of a hypothesis
Learners use bad syntax for hypothesis formulation
Lack of prior knowledge
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Monitoring ExperimentsMonitoring Experiments
Design and manage multiple experiments
… relieves memory and cognitive load.
… reactive system
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Hooking Intelligent SupportHooking Intelligent Support
It is hard to track what a learner does and thinks in an open learning environment
… how to provide adaptivity?
Base it on externalized data on learning processesProvide adaptivity, feedback
Monitoring tool could advise to do a specific experiment based on the predictions of a hypothesis
Simulation could be asked to constrain experiment space
Hypothesis sketchpad can analyze hypotheses
… or constrain the learner
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24Source: Martin Homik Educational Technologies WS 2006/07
Hooking Intelligent Support: FeedbackHooking Intelligent Support: Feedback
Quality of the experimentsHere, no conclusion can
be drawn
Relation of the experimental results to the current hypothesis
Here, experiments support hypothesis
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SimQuest Learning EnvironmentSimQuest Learning Environment
Modularize in components
All components have a common/shared contextHere: variables represent express the current state and
represent the inputs and outputs
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SimQuest Learning ArchitectureSimQuest Learning Architecture
SimulationContext
InstructionalMeasures
LearnerInterface
SimulationModel
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Simulations
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SimNervSimNerv
physiology course for medical and human-biology students http://www.clabs.de
Stimulator Oscilloscope recording chamber Two "frog sciatic
nerves"
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Driving AcademyDriving Academy
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Flight Simulator, Auckland, New ZealandFlight Simulator, Auckland, New Zealand
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GGeneric eneric LLarge arge AAircraft ircraft SSimulator imulator SSystem Project ystem Project
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LearningDiaries
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Typical SituationTypical Situation
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Identify/Close Learning GapsIdentify/Close Learning Gaps
… by learning diaries (studies provide evidence)
… naïve learning logs are sub optimal wrt. (meta-) cognitive learning (Nückles et al., 2004)
… Prompting: answering questions … can increase learning as they help to activate background
knowledge (Pressley et al., 1992)
… the whole of a person’s knowledge, including explicit and tacit knowledge, metacognitive and conceptual knowledge (Dochy & Alexander, 1995).
… (Meta-) Cognitive prompts (Berthold et al., 2006)
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35Source: Martin Homik Educational Technologies WS 2006/07
Electronic Learning DiariesElectronic Learning Diaries
Electronic diaries exist for a long time
Weblogs became a popular platformUse blogs for writing learning diaries
Knowledge Bloggers report about:Current work
Research ideas
Learning progress
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ExampleExample
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ExampleExample
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Cognitive PromptsCognitive Prompts
Organisation. What is the story line of the talk? Describe the motivation, the goals, and the path to the goals.
Elaboration. Make up own examples, counter examples or illustrations. Did you come across the presented techniques in a different context? If yes, where?
Critical Reflection. What did you find interesting, useful, convincing, inspiring? Is there anything you criticise?
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39Source: Martin Homik Educational Technologies WS 2006/07
Metacognitive PromptsMetacognitive Prompts
Monitoring. What did you not understand?
Self-diagnosis. What is the likely reason?
Self-regulation. How would you overcome your deficiency?
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ConceptMapping
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GoalsGoals
Making knowledge explicit by spatial visualisation:
Reduce cognitive load
Contribute to understanding
Contribute to knowledge acquisition
Contribute to knowledge management
By courtesy of Sigmar-Olaf Tergan, IWM-KMRC
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42Source: Martin Homik Educational Technologies WS 2006/07
Types of spatial configurations (1)Types of spatial configurations (1)
sequence cluster
By courtesy of Sigmar-Olaf Tergan, IWM-KMRC
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Types of spatial configurations (2)Types of spatial configurations (2)
hierarchy
By courtesy of Sigmar-Olaf Tergan, IWM-KMRC
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Types of spatial configurations (3)Types of spatial configurations (3)
Web-like organisations (see Wiegemann, Dansereau et al., 1992)
By courtesy of Sigmar-Olaf Tergan, IWM-KMRC
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Types of spatial configurations (4)Types of spatial configurations (4)
web-representation
part
part
exampleexample
exercise
By courtesy of Sigmar-Olaf Tergan, IWM-KMRC
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Representation focusesRepresentation focuses
… kind of knowledge elements:Conceptual knowledgeMulti-media content knowledgeAnnotationsKnowledge resources (URIs)
… kind of relation between knowledge elements:Single lines connecting two nodesLines with arrow headSemantic links (labelled links)hyperlinks
By courtesy of Sigmar-Olaf Tergan, IWM-KMRC
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Spatial representations statementsSpatial representations statements
Are configurations or ways ideas are “spread out” on a page or display
Provide a framework to organise and structure information (O’Donnell, 2003)
Match the central tendency of the brain for structuring and visualising knowledge in mental images and mental models (Kosslyn, 1980; Johnson-Laird, 1993; Kintsch 1998)
By courtesy of Sigmar-Olaf Tergan, IWM-KMRC
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48Source: Martin Homik Educational Technologies WS 2006/07
Spatial representations statementsSpatial representations statements
Facilitate cognitive processing by allowing for artifact-based reasoning (Norman, 1991)
Are easier to search and navigate than traditional text displays (Larkin & Simon, 1987)
Can provide spatial and verbal cues that aid both storing and remembering information (Paivio, 1986)
By courtesy of Sigmar-Olaf Tergan, IWM-KMRC
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What are Mind Maps?What are Mind Maps?
Bases on: human brain is an associative networkStimulates associative and creative thinking
Terms are structured according to their thematic proximity
Used for brainstorming; spontaneous creation and concatenation of ideas
Start with a central idea
… and spread branches to related terms
… relations between terms are usually undefined
… tree-like structure
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Example: Mind Map with “Mind Manger”Example: Mind Map with “Mind Manger”
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Example Mind MapExample Mind Map
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Example Mind MapExample Mind Map
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What are Concept Maps?What are Concept Maps?
Base on: human brain consist of a (hierarchically) structured network of concepts
Stimulates analytical and reflective thinking
(web-) network structure and node positions are determined by the logical relations between concepts
Node positions used to relate hierarchies
Edges used to represent relations
Pioneer in Concept Mapping research: J.D. Novak
“Meaningful learning involves the assimilation of new concepts and propositions into existing cognitive structures.”
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Example: Hierarchical Concept MapExample: Hierarchical Concept Map
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Example: Concept MapExample: Concept Map
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FunctionsFunctions
Reduction
Structuring
Visualising
Communication
Elaboration
Motivation
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Use for learning and instructionUse for learning and instruction
Instructional strategy (lecture aid)
Instructional strategy for fostering complex problem solving
Learning strategy for fostering comprehension, knowledge acquisition, self-regulated learning
Tool for knowledge diagnosis and evaluation of learning success
Navigational tool in hypermedia-based programs (Gaines & Shaw, 1995)
By courtesy of Sigmar-Olaf Tergan, IWM-KMRC
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Use for Knowledge ManagementUse for Knowledge Management
For comprehensive modeling of knowledge (Alpert & Gruenenberg, 2000)
For capturing and retaining knowledge in an enterprise (Canas, Leake & Wilson, 2003)
For knowledge communication and sharing in collaborative work (Mandl & Fisher, 2000)
For providing direct interactive access to knowledge and knowledge resources (Coffey et al., 2002)
For maintaining and updating knowledge (Coffey et al., 2002)
By courtesy of Sigmar-Olaf Tergan, IWM-KMRC
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59Source: Martin Homik Educational Technologies WS 2006/07
Mapping Tools (1)Mapping Tools (1)
Mind Manager (Mindjet) Inspiration (Inspiration Software Inc.) Visual Knowledge Builder (Texas A&M University) Smart Ideas (Smart Technologies) Knowledge Manager (Hypersoft) Axon (Axon Research) cMap Tools (Institute for Human and Machine Cognition, Univ. West Florida) Smart Draw (SmartDraw.com) Mind Mapper (SimTech USA Corp.) Visual Mind (Norcan Data) The Brain (The Brain Technologies Corp.) OpenMind (Matchware) CoolModes (Collide) CognitiveTools (EMindMap) VModel (?) FreeMind (Sourceforge)
By courtesy of Sigmar-Olaf Tergan, IWM-KMRC
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iCMapiCMap
Reuse data (structures) stored in some database for visualisation and for training to create those structures.
iCMap (Homik, Melis, 2005)
See also (Judy Kay et al.): Verified Concept Mapper Demo
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AM: Knowledge RepresentationAM: Knowledge Representation
Abstract concept level:• Symbols
Content concept level:• Definitions• Theorems
Satellite level:• Examples• Exercises
S1 S2 S3
D1 D2
D3
T1 T2
T3
Exc1 Exc2
Exc3
Exa1 Exa2
Exa3
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62Source: Martin Homik Educational Technologies WS 2006/07
AM: Knowledge Representation:AM: Knowledge Representation:
Abstract concept level:• Symbols
Content concept level:• Definitions• Theorems
Satellite level:• Examples• Exercises
S1 S2 S3
D1 D2
D3
T1 T2
T3
Exc1 Exc2
Exc3
Exa1 Exa2
Exa3
for for for
for for
for for
for for
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63Source: Martin Homik Educational Technologies WS 2006/07
AM: Knowledge RepresentationAM: Knowledge Representation
Abstract concept level:• Symbols
Content concept level:• Definitions• Theorems
Satellite level:• Examples• Exercises
S1 S2 S3
D1 D2
D3
T1 T2
T3
Exc1 Exc2
Exc3
Exa1 Exa2
Exa3
for
for
Domain prerequisite
Domain prerequisite
Domain prerequisite
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64Source: Martin Homik Educational Technologies WS 2006/07
AM: Knowledge RepresentationAM: Knowledge Representation
Abstract concept level:• Symbols
Content Concept level:• Definitions• Theorems
Satellite level:• Examples• Exercises
S1 S2 S3
D1 D2
D3
T1 T2
T3
Exc1 Exc2
Exc3
Exa1 Exa2
Exa3
for against
isA
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65Source: Martin Homik Educational Technologies WS 2006/07
VerificationVerification
1. Against knowledge base
2. Against authored exercise
3. Deduction
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66Source: Martin Homik Educational Technologies WS 2006/07
Deductive Relation: TransitivityDeductive Relation: Transitivity
Abstract concept level:• Symbols
Content concept level:• Definitions• Theorems
Satellite level:• Examples• Exercises
S1 S2 S3
D1 D2
D3
T1 T2
T3
Exc1 Exc2
Exc3
Exa1 Exa2
Exa3
isAisA
isA
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67Source: Martin Homik Educational Technologies WS 2006/07
Deductive Relation: TransitivityDeductive Relation: Transitivity
Abstract concept level:• Symbols
Content concept level:• Definitions• Theorems
Satellite level:• Examples• Exercises
S1 S2 S3
D1 D2
D3
T1 T2
T3
Exc1 Exc2
Exc3
Exa1 Exa2
Exa3
Domain prerequisite
Domain prerequisite Domain prerequisite
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68Source: Martin Homik Educational Technologies WS 2006/07
Deductive Relation: EquivalenceDeductive Relation: Equivalence
Abstract concept level:• Symbols
Content concept level:• Definitions• Theorems
Satellite level:• Examples• Exercises
S1 S2 S3
D1 D2
D3
T1 T2
T3
Exc1 Exc2
Exc3
Exa1 Exa2
Exa3
isA
isA
for for
equivalence
equivalence
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69Source: Martin Homik Educational Technologies WS 2006/07
Fault ToleranceFault Tolerance
Abstract concept level:• Symbols
Content concept level:• Definitions• Theorems
Satellite level:• Examples• Exercises
S1 S2
D1 D2
D3
T1 T2
T3
Exc1 Exc2
Exc3
Exa1 Exa2
Exa3
for
isA
isA
forfor for
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70Source: Martin Homik Educational Technologies WS 2006/07
iCMap ExampleiCMap Example
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71Source: Martin Homik Educational Technologies WS 2006/07
iCMap FeedbackiCMap Feedback
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72Source: Martin Homik Educational Technologies WS 2006/07
Local FeedbackLocal Feedback
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73Source: Martin Homik Educational Technologies WS 2006/07
Take Home MessageTake Home Message
Cognitivism + Constructivism + Discovery Learning: Cognitive Tools
Reduce cognitive load
Support encoding and rehearsal in working memory
Support implicit knowledge creation
Externalize knowledge
Visualize knowledge
Self-guided playful learning
Obey a learner’s individual ways of knowledge creation and conceptualisation of information
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74Source: Martin Homik Educational Technologies WS 2006/07
LiteratureLiterature David H. Jonassen, What are Cognitive Tools?,
http://www.cs.umu.se/kurser/TDBC12/HT99/Jonassen.html
Wouter van Joolingen, Cognitive Tools for discovery learning, http://aied.inf.ed.ac.uk/members99/archive/vol_10/joolingen/paper.pdf
Ruth C Clark, Richard E. Mayer, e-Learning and the Science of Instruction
R. Schulmeister. GrundlagenhypermedialerLernsysteme. Theorie-Didaktik-Design. R. OldenbourgVerlag: München (available in English language online: http://www.izhd.uni-hamburg.de/paginae/Book/Frames/Start_FRAME.html.
Michael W. Eysenck, Mark T. Keane: Cognitive Psychology
Martin Homik, Erica Melis, Using Blogs for Learning Logs, http://www.activemath.org/pubs/bte.php?id=HomikMelis-ep2006
Lajoie, S. P., Greer, J. E., Munsie, S. D., Wilkie, T. V., Guerrera. C., & Aleong, P. (1995). Establishing an argumentation environment to foster scientific reasoning with BioWorld. In D. Jonassen & G. McCalla (Eds.), Proceedings of the International Conference on Computers in Education (pp. 89-96). Charlottesville, VA: Association for the Advancement of Computing in Education.
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75Source: Martin Homik Educational Technologies WS 2006/07
LiteratureLiterature
Martin Homik, Erica Melis, e-Portfolios in ActiveMath, http://www.activemath.org/pubs/bi.php?id=HomikMelis-ePortfolio-ep2005
G. Polya, How to solve it
Surveys on mapping technologies: Jonassen et al., 1993 Jüngst & Strittmatter, 1995 Fischer, 1998 Mandl & Fischer, 2000 O’Donnell, 2003 Nückles, Gurlitt, Pabst, and Renkl, Mind Maps and Concept Maps, (in German;
lots of other English literature)