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Richard Baraniuk Connexions Rice University

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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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slide1

Personalized Learning

via Connexions

Richard BaraniukConnexions

Rice University

learning today
learning today

inefficient developmentand feedback

concept silos

poor access to high-quality opportunities

slide6

nanotubes

knowledge forms a network

algebra

geometry

art history

proteomics

linguistics

slide7

knowledge forms a network

networks enable new means to produce and exploit knowledge

o pen education enablers
open education enablers

technology

web, internet, databases, …

intellectual property

open-source licenses for content

make content easy and safe to share

connexions cnx org
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
slide12

free online: 6million uses to date

iPad/iPhone/Androidvia ePub

$26 in print(627 pages)

slide16

openness can disrupt the entire educational enterprise

move beyond factory mindset to individualized, personalized education

Sir Ken Robinson

slide17

GOAL:

personalize the learning experience

educational assessment
educational assessment

lack of timely feedback

lack of diverse remedial/enrichment materials

automated feedback

systems expensive and fragile

slide19

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
slide20

Connexions

Connexions

slide21

Connexions+

Quadbaseopen sourceassessments database

supporting infrastructure for assessment, interactivity, peer review

Connexions

interactivesimsLablets

Focuspeer review system

Videotutorials

slide27

PLS – personalized learning system

QuADopen sourceassessments database

machine learning algs

community

Connexions

interactivesimsLablets

Focuspeer review system

Videotutorials

l og of student s activities
log of student’s activities

http://cnx.org/m34921/latest

http://cnx.org/m34921/latest

slide36

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
m achine learning
machine learning

graphical models

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

adaptivity

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

slide38

PLS architecture

Machine

Learning

Researchers

Duke Cog Sci

PLS

Backend

PLS

Quadbase

Connexions

Lablets

Linkify

a lpha testing
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
summary

open architecture for personalized learning

Connexions, OpenStax CollegeQuadbase PLS

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

slide41

Connexionscnx.org

OpenStax College

openstaxcollege.org

Quadbasequadbase.org

PLS

pls.ricedsp.org

The Personalized Learning System