Tuesday, June 21, 2011

Advanced Prezi 201

A Prezi on more advanced tricks with Prezi e.g. animations

Why Twitter? A Guide for School Principals

An explanation and workshop for Principals on why they should use Twitter

Thursday, June 16, 2011

Initial Data - Assessing the Impact of 1-to-1 Laptops on Student Performance

Following on from my previous post Postgraduate Proposal - Assessing the Impact of 1-to-1 Laptops on Student Performance, here is an outline of the data I have collected thus far plus early analyses and dilemmas:

1. 2009 School Certificate results in 6 subjects for 4500 students (27,000 entries)

This data dates from before the start of my studies. It is crude and non-experimental. However, it is of significance since half of the students in these examinations had been schooled with laptops for over a year and half had not. The data includes school (36 schools), gender, postcode, socio-economic status (SES) by postcode plus some 'value-added' data. To this data I have also added LaptopYes/No and also Mac/PC. After an intensive 2 weeks of mutiple regression at ACSPRI in January I have subsequently performed various multiple regressions on this data using PASW Statistics 18 (SPSS) with the prime model being:

Exam score = f(gender, SES, school, subject, LaptopY/N)

As previously noted this is crude, non-experimental data. Points to consider:
  • the SES by postcode is from the Australian Bureau of Statistics SEIFA - Socio-Economic Index for Areas. SEIFA 4 has been used: Parent Education and Employment category, since this accounts for the best variance
  • I originally hoped to use the 'value-added' data as my dependent variable. However, this was generated by an external statistician, incorporating SES by postcode, gender etc already. As such there is massive multicollinearity and it has next to no correlation with my model plus I do not want to have to justify someone else's construct, whereas examination scores are a matter of record.
  • the Mac/PC variable was originally included but appeared to have no bearing. This will be reported on
  • dummy variables were used for the 6 subjects and 36 schools
  • importantly, the model above, which appeared to be the most all-encompassing for the data available, also provided the best goodness of fit (e.g. filtering down to only Science scores decreased the goodness of fit)
  • the coefficient of determination R2 is only 0.166. So the first dilemma is what to make of this. Some people can get a bit hysterical about R2 values, a rule-of-thumb I have heard is that Sciences would hope for an R2 > 0.80 and Social Sciences would hope for at least R2 > 0.30. Either way I am working with 0.166 though this will not make up the main analysis of my research. As a colleague pointed out "we are not so much concerned about the fuzziness of the cloud as trying to find the best path through it".
  • an added complication is that several of the schools seem to have poor or very poor significance. The model has not taken into account any variation in deployment of 1:1. Should I remove schools with alternative deployment or poor significance?
  • with educational analysis being so complicated and full of overlapping variables it has been suggested that I should use Multi-Level Modelling instead, but this is a road I don't really want to go down. Any advice would be greatly appreciated!

2. 2010 School Certificate results in 6 subjects for 4500 students (27,000 entries)

This is the same set of data as above but for 2010 instead. The same model and multiple regression were performed. Points to consider:
  • only 35 schools this time
  • some of the SES data is missing but I should have this shortly
  • at present, with missing SES data, R2 is only 0.147.

3. 2010 Student and Teacher Surveys

A couple of months prior to sitting their School Certificate examinations I surveyed 1200 students (60% response rate) and 47 Science teachers (64% response rate) from 14 schools. These 14 schools had relatively similar 1:1 laptop deployments but for 7 of them it was their 1st cohort with 1:1 whereas for the other 7 it was their 2nd 1:1 cohort to sit SC. The surveys examined an individual student's perception of their use of their laptop at home, school and in Science and their Science Teacher's perception of their professional development, own use and that of their students. Accordingly I am in the process of using the data to calculate efficacy scores for the individual students and teachers. Thus ultimately, in combination with the examination data, I hope to perform multiple regression analyses with the model:

Exam score = f(gender, SES, school, subject, LaptopY/N, Student Efficacy, Teacher Efficacy)

This should hopefully yield far better measures of goodness of fit as it should be a better model in terms of the impact of 1:1 laptops.

4. Data yet to be Obtained and Analysed

I still intend to:
  • survey 2011 SC and HSC Science students and teachers, calculate efficacies, combine with 2011 results and regress (2011 HSC will be the only instance where half the students will have been schooled with a laptop for 3+ years whilst the other half will have received conventional instruction).
  • compare performance data historically by school and LaptopY/N
  • perform side analyses and report on the survey data

So in a nutshell that is where I am at to-date. Obviously I need to pick up on my reading (255 articles and publications accrued so far) and start backing my data up with theory. Any observations and/or interviews will happen later if at all. Yet again, any advice or comments would be keenly sought, thanks!!

Monday, June 13, 2011

Postgraduate Proposal - Assessing the Impact of 1-to-1 Laptops on Student Performance

After worrying that Twitter might be distracting me from my studies I had an epiphany following a conversation with Doug Belshaw, rather than view Twitter as a distraction, use it instead to connect my PLN with my studies via this blog. Thus potentially I will gain much needed constructive criticism, critical friends and encouragement along the tough road of postgraduate study. (Thanks Doug!)

As an initial post on my studies the original proposal from May 2010 is included. I enrolled in July 2010 i.e. Semester 2. The timeline however has been updated and is accurate as of June 2011. Please read the proposal below (5 pages) plus further comments at the bottom of this blog post. (For some reason this has a weird font on the iPad...)
Postgraduate Proposal for Simon Crook - A Research Study to Assess the Impact of 1-to-1 laptops on Student Performance
As with any study it has evolved and changed from the original proposal. Important points to note are:
  1. ostensibly I am a MSc student, however, the scope of this research is easily PhD. The understanding is that once I have made an initial publication (hopefully by the end of the year) it will roll over into a full PhD
  2. Research Question 3 may well be dropped
  3. Research Question 4 has already been dropped, it would be a PhD in it's own right.
  4. This study will focus specifically on 1-to-1 laptops rather than scrutinising the DER as I do not want to get into a political debate and analysis
  5. 2009 SC and 2011 HSC are important epochs as in each instance, for the surveyed schools, we essentially have 50/50 have/have-nots regarding 1-to-1 laptops
  6. Even though the title refers to examining student performance in Science the initial two 'crude' analyses will be for all School Certificate courses: Science, English, Mathematics, History, Geography and Computer Skills
  7. The 2009 SC data is historical data from prior to the commencement of my studies
  8. The student and teacher survey data will be used to measure student and teacher efficacies to use as variables in the 'richer' analyses.
  9. To whet your appetite for future posts, the 'crude' analyses of the 2009 and 2010 data each have over 27,000 records: over 4,500 students in 6 subjects. This is big potatoes!
For those of you that have had the time and inclination to read all of this I would appreciate any feedback you may have to offer. Thanks for the help!!! I will endeavour to add further posts outlining my initial analysis methods and findings in due course.



eLearning in RE

(Of course) a Prezi from the 'eLearning in RE' workshop including applications such as Dipity for timelines. The first part of the day was dedicated to getting teachers on to Twitter and networking using the #ceore hashtag.

eLearning in ESL

Here is a the Prezi from the 'eLearning in ESL' workshop including such resources as Google Translate and ESL Video. Also '55 Interesting Ideas to Enhance ESL Pedagogy using Technology' in the style of Tom Barrett's 'Interesting Ways' set up by a colleague for the ESL teachers.

Getting teachers to contribute to an 'Interesting Ways' Google doc is a great way of getting them to collaborate and generate and share ideas during and after a workshop. Bearing in mind many of the ESL teachers have received little PD in the use of technology in the classroom this is a great first effort.