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Estimation: How big is this Gulliver? - mathematics activities

Despite there not being formal measurements in the photograph, it is possible to estimate the height of the giant from the information in the photograph. The only full body part of the giant that can be seen is the left foot. The image shows all of the two, presumably 'normal-sized', men who are approximately the same height, ...

Teacher resource

Home-run records

This realistic mathematical investigation uses stem and leaf plots to compare the performances of two baseballers. It examines the effects of outliers on the mean. The task includes a student worksheet with data, teacher notes, assessment advice and ideas for extension. ICT could be used.

Interactive resource

Graph investigator: concentration

Do students with better concentration have faster reaction times? Select the appropriate data sets and choose a useful graph type to investigate this question. See the data presented in the chosen graph type and draw a conclusion about this question. Explore different graph types such as scatter plots, line graphs and histograms. ...

Interactive resource

Stem-and-leaf graphs: reaction time

Do right-handed students have faster reaction times than left-handed students? Display the given data, including your own time, in a back-to-back stem-and-leaf graph to investigate the answer to this question. Identify the median for left- and right-handed students and use the two means to help you draw a conclusion about ...

Interactive resource

Data handler: bus timetable

Help plan your school sports day by organising buses for all the students. Plot raw data on a dot plot and then group that data according to three criteria or 'rules' to decide the minimum number of buses required and departure times to suit all students. This learning object is one in a series of three objects. The series ...

Interactive resource

Graph investigator: getting to school

What is the most common travel time to school for students? Select the appropriate data sets and choose a useful graph type to investigate this question. See the data presented in the chosen graph type and draw a conclusion about this question. Explore different graph types such as scatter plots, line graphs and histograms. ...

Interactive resource

Graph investigator

Explore different graph types such as scatter plots, line graphs and histograms. Choose questions to investigate. For example, do girls have faster reaction times than boys? Select the appropriate data set. Then choose a useful graph type. Examine the data presented in the chosen graph type and draw a conclusion about the ...

Interactive resource

Data handler: sock order

Help plan your school sports day by ordering special socks for the students. Plot raw data on a dot plot and then group that data according to three criteria or 'rules' to decide on the sizes and numbers of pairs of socks to order in each group. This learning object is one in a series of three objects. The series is also ...

Interactive resource

Stem-and-leaf graphs: height

Are 13-year-old boys taller than 13-year-old girls? Display the data in a back-to-back stem-and-leaf graph to investigate the truth of this conjecture. Identify the median for girls and boys and use the two means to help draw a conclusion about this question. Use the tutorial to show the features and uses of stem-and-leaf ...

Interactive resource

Graph investigator: homework hours [ESL]

Does the average number of hours spent on homework increase with year level? Select the appropriate data sets and choose a useful graph type to investigate this question. See the data presented in the chosen graph type and draw a conclusion about this question. Explore different graph types such as scatter plots, line graphs ...

Interactive resource

Graph investigator: reaction time [ESL]

Do girls have faster reaction times than boys? Select the appropriate data sets and choose a useful graph type to investigate this question. See the data presented in the chosen graph type and draw a conclusion about this question. Explore different graph types such as scatter plots, line graphs and histograms. This learning ...

Interactive resource

Graph investigator: home internet access

What percentage of students have internet access at home? Select the appropriate data sets and choose a useful graph type to investigate this question. See the data presented in the chosen graph type and draw a conclusion about this question. Explore different graph types such as scatter plots, line graphs and histograms. ...

Interactive resource

Graph investigator: hand preference [ESL]

Do left-handed and right-handed students have different reaction times? Select the appropriate data sets and choose a useful graph type to investigate this question. See the data presented in the chosen graph type and draw a conclusion about this question. Explore different graph types such as scatter plots, line graphs ...

Interactive resource

Graph investigator: reaction time

Do girls have faster reaction times than boys? Select the appropriate data sets and choose a useful graph type to investigate this question. See the data presented in the chosen graph type and draw a conclusion about this question. Explore different graph types such as scatter plots, line graphs and histograms. This learning ...

Interactive resource

Stem-and-leaf graphs: an introduction

Find out what a stem-and-leaf graph is. Find out what a back-to-back stem-and-leaf graph is. Work through this tutorial to understand the features of stem-and-leaf graphs, and how they are used to display and to compare two data sets. Observe how the mean and median of the data sets can be used to interpret information. ...

Interactive resource

Data handler: T-shirt order

Help plan your school sports day by ordering special T-shirts for the students. Plot raw data on a dot plot and then group that data according to three criteria or 'rules' to decide on the sizes and numbers of T-shirts to order in each group. This learning object is one in a series of three objects. The series is also packaged ...

Interactive resource

Data handler

Help plan your school sports day by ordering special T-shirts and socks, and organising buses for all the students. Plot raw data on a dot plot and then group that data according to three criteria or 'rules' to decide on suitable sizes and numbers of T-shirts and socks to order in each group, and to decide the minimum number ...

Interactive resource

Stem-and-leaf graphs: preferred hand speed

Are reaction times using a person’s preferred hand faster than using the non-preferred hand? Display the given data, including your own time, in a back-to-back stem-and-leaf graph to investigate the answer to this question. Identify the median for preferred and non-preferred hands and use the two means to draw a conclusion ...

Interactive resource

Graph investigator: getting to school [ESL]

How long do most students take to get to school? Select the appropriate data sets and choose a useful graph type to investigate this question. See the data presented in the chosen graph type and draw a conclusion about this question. Explore different graph types such as scatter plots, line graphs and histograms. This learning ...

Interactive resource

Graph investigator: concentration [ESL]

Do students with better concentration have faster reaction times? Select the appropriate data sets and choose a useful graph type to investigate this question. See the data presented in the chosen graph type and draw a conclusion about this question. Explore different graph types such as scatter plots, line graphs and histograms. ...