Making Measures Posing Questions Informal inference CensusAtSchool

MAKING MEASURES
Timing
Details
Resources
15-20mins
Making the measures
- using the equipment
- identifying the measurement
- eliminating variability
Cross-curricula opportunities
http://www.censusatschool.org.nz/
questions for 2009 2009questionsc@s.doc
Making measures.doc can be found at:
http://www.censusatschool.org.nz/2009/information-packs/
Teacher data cards teacherdatacards.doc
5-10mins
Working with data
Sorting and cleaning
Take one variable that you are interested in, sort the data.
Think about realistic outcomes for the variable.
What will you do with data that isn't realistic?
Year 10 posing cards year10posing.xls
Karekare College KarekareCollegedatacards.xls
10-15mins
Using data cards to make displays
Pose a summary investigative question and use the data cards to make a display to help to answer the question.
Write I notice statements about your display looking at key features of your display.
Year 10 posing cards year10posing.xls
Karekare College KarekareCollegedatacards.xls
10-15mins
Using dot plots
Pose comparison question (numerical data) and use the given data to make a dot plot to help answer your question.
Make I notice statements about your display, looking at key features and using the language of comparison.
Tables of data tablesdatayr10.xls
Sheets for making dot plots dotplotgrids.doc
Analysis ideas analysisideas.doc
Pfannkuch et al A teacher’s guide to informal comparative reasoning or on CensusAtSchoolsite.
POSING QUESTIONS
Timing
Details
Resources
15-20mins
Familiarise with data set
Posing own investigative questions
identifying features of good investigative questions
year10posing.xls
Paper being presented - What about the P in the PPDAC cycle? An initial look at posing questions for statistical investigation.
Lesson 2.doc
15-20mins
Looking at student posed questions
Sorting these into groups
Classifying groups
use to identify features of good investigative questions
posedInvQs.doc
posingquestionspractice.doc
posingquestionslevel4.doc

INFORMAL INFERENCE
Timing
Details
Resources
10-15mins
Familiarise with the data set
Identify variables
Pose an investigative question to explore.
How will we answer this question?
Karekare College KarekareCollegedatacards.xls
Info about Karekare College data cards KarekareCollege.doc
45mins
Do the heights of boys at Karekare College tend to be greater than the heights of girls at Karekare College?
Take a sample of 30 boys and 30 girls.

Working with data - Sorting and cleaning
Think about realistic outcomes for the variable.
What will you do with data that isn't realistic?

Graphing the data, use the data cards to make a dot plot.
Find median, UQ, LQ, plot the "box" onto pre-prepared axes.

Make I notice statements about the displays.

Repeat for second question
Does the time to school by bus tend to be greater than the time to school when walking for students at Karekare College?
Boxplot grids
OHTgraphblank.doc

CENSUS AT SCHOOL

Timing
Details
Resources
20mins
Introduction to CensusAtSchool site
Explore the four tabs: survey, 2009 data, classroom activities and new curriculum
http://www.censusatschool.org.nz/
30mins
Using data from CensusAtSchool
Getting a random sample: 2009, 2007, 2005, 2003
Viewing using html, excel, fathom and tinkerplots

Making data cards for use with classes
A bit of a guide in the neck wrist cards, look at the first sheet, called introduction
Year 10 posing cards year10posing.xls
Karekare College cards KarekareCollegedatacards.xls
Neck wrist cards year9data2005.xls
10mins
Ideas from here - what now