NZAMT+11

Making Measures Posing Questions Informal inference CensusAtSchool

MAKING MEASURES - using the equipment - identifying the measurement - eliminating variability Cross-curricula opportunities || [] questions for 2009 [|2009questionsc@s.doc] Making measures.doc can be found at: [] Teacher data cards [|teacherdatacards.doc] || 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] || 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] || 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 [|CensusAtSchool]site. || POSING QUESTIONS 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] || Sorting these into groups Classifying groups use to identify features of good investigative questions || [|posedInvQs.doc] [|posingquestionspractice.doc] [|posingquestionslevel4.doc] ||
 * Timing || Details || Resources ||
 * 15-20mins || Making the measures
 * 5-10mins || Working with data
 * 10-15mins || Using data cards to make displays
 * 10-15mins || Using dot plots
 * Timing || Details |||| Resources ||
 * 15-20mins || Familiarise with data set
 * 15-20mins || Looking at student posed questions

INFORMAL INFERENCE 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] || Take a sample of 30 boys and 30 girls.
 * Timing || Details |||| Resources ||
 * 10-15mins || Familiarise with the data set
 * 45mins || Do the heights of boys at Karekare College tend to be greater than the heights of girls at Karekare College?

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 Explore the four tabs: survey, 2009 data, classroom activities and new curriculum || [] || Getting a random sample: 2009, 2007, 2005, 2003 Viewing using html, excel, fathom and tinkerplots
 * || Timing || Details || Resources ||
 * 20mins || Introduction to CensusAtSchool site
 * 30mins || Using data from CensusAtSchool

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 ||  ||