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Richard Baraniuk Connexions Rice University PowerPoint PPT Presentation


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Personalized Learning via Connexions. Richard Baraniuk Connexions Rice University. learning today. inefficient development and feedback. concept silos. poor access to high-quality opportunities. nanotubes. knowledge forms a network. algebra. geometry. art history. proteomics.

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Richard Baraniuk Connexions Rice University

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Personalized Learning

via Connexions

Richard BaraniukConnexions

Rice University


learning today

inefficient developmentand feedback

concept silos

poor access to high-quality opportunities


nanotubes

knowledge forms a network

algebra

geometry

art history

proteomics

linguistics


knowledge forms a network

networks enable new means to produce and exploit knowledge


open standards for networks of knowledge


open education enablers

technology

web, internet,databases, …

intellectual property

open-source licenses for content

make content easy and safe to share


Connexions (cnx.org)

  • 1200 open textbooks/collections

  • 20000 Lego modules

  • from contributors worldwide

  • in 40+ languages

  • millions of users per monthfrom 190 countries

  • 90 million uses of

  • STEM content


free online: 6million uses to date

iPad/iPhone/Androidvia ePub

$26 in print(627 pages)


CNXpersonalized learning


openness can disrupt the entire educational enterprise

move beyond factory mindset to individualized, personalizededucation

Sir Ken Robinson


GOAL:

personalize the learning experience


educational assessment

lack of timely feedback

lack of diverse remedial/enrichment materials

automated feedback

systems expensive and fragile


GOAL:

personalize the learning experience

  • exploit global community of authors/teachers/learners (OER/CNX)

  • replace top-down rules based systems with bottom-up machine learning algorithms

  • bake in cognitive science best practices


Connexions

Connexions


Connexions+

Quadbaseopen sourceassessments database

supporting infrastructure for assessment, interactivity, peer review

Connexions

interactivesimsLablets

Focuspeer review system

Videotutorials


versions, comments, tags, licenses, roles, publishing


solutions


projects for collaboration


tags!


PLS – personalized learning system

QuADopen sourceassessments database

machine learning algs

community

Connexions

interactivesimsLablets

Focuspeer review system

Videotutorials


instructor view: course


instructor view: lesson


student view: section


student view: assignment


student view: working a problem


student feedback


viewing a student’s work


log of student’s activities

http://cnx.org/m34921/latest

http://cnx.org/m34921/latest


cognitive science

cog sci principles baked into PLS

  • retrieval practice

  • timely and relevant feedback

  • spacing of practice and feedback

    cog sci collaborators

  • Elizabeth Marsh, Andy Butler, Duke U

  • Henry Roediger, Wash U


machine learning

graphical models

learn and encode relationships among content, questions, answers, potential feedback, …

adaptivity

optimize each student’s “learning path” through the graph


PLS architecture

Machine

Learning

Researchers

Duke Cog Sci

PLS

Backend

PLS

Quadbase

Connexions

Lablets

Linkify


alpha testing

Rice U ELEC301 Signals and Systems

  • homework replacement w/ cog sci (feedback, retrieval practice, repetition, spacing) but no machine learning based adaptivity

    preliminary findings

  • using the PLS for homework promoted better retention and transfer of knowledge on an end-of-semester assessment relative to standard practice

  • magnitude of the benefit was almost equivalent to one letter grade considering completely accurate use of knowledge (no partial credit) and about half of one letter grade considering giving credit for partial knowledge

    summary

  • PLS > standard practice

  • effect size ≈ 1/2 to 1 letter grade


summary

open architecture for personalized learning

Connexions, OpenStax CollegeQuadbasePLS

built-in machine learning and cognitive science

domain and level agnostic

promising alpha test results

coming soon:PLS integration with Moodle, Sakai, …collaborations in college, K-12


Connexionscnx.org

OpenStax College

openstaxcollege.org

Quadbasequadbase.org

PLS

pls.ricedsp.org

The Personalized Learning System


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