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# reSolve: Authentic Problems: Target Ball

This sequence of four lessons explores the relationship between an informal unit of measure and what is being measured using the context of designing a game of 'Target Ball'. Students work in groups to collect data on how far their chosen ball rolls, using a cut-out foot as an informal unit of measure. They represent and interpret their data and then work towards using formal units to make their game 'fair'. Each lesson is outlined in detail including curriculum links, vocabulary, materials needed, sample answers, discussion points and student resources. This sequence is part of the reSolve: Mathematics by Inquiry special topic 'Authentic Problems'.

Year level(s) Year 1, Year 2
Audience Teacher
Purpose Teaching resource
Teaching strategies and pedagogical approaches Mathematics investigation
Keywords data representation, length, positive integers, informal units

## Curriculum alignment

Curriculum connections Numeracy
Strand and focus Number, Measurement, Statistics, Build understanding, Apply understanding
Topics Operating with number, Using units of measurement, Length, Data representation and interpretation
AC: Mathematics (V9.0) content descriptions
AC9M1N01
Recognise, represent and order numbers to at least 120 using physical and virtual materials, numerals, number lines and charts

AC9M2M01
Measure and compare objects based on length, capacity and mass using appropriate uniform informal units and smaller units for accuracy when necessary

AC9M1ST01
Acquire and record data for categorical variables in various ways including using digital tools, objects, images, drawings, lists, tally marks and symbols

AC9M1ST02
Represent collected data for a categorical variable using one-to-one displays and digital tools where appropriate; compare the data using frequencies and discuss the findings

Numeracy progression Number and place value (P4)
Understanding units of measurement (P3)
Interpreting and representing data (P2)
Counting processes (P3)