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# reSolve: Addition: Chess: The Rook

This lesson engages students in investigating place value and the addition and subtraction of numbers by exploring computation on the number chart. Students analyse the moves of a rook chess piece and how the value of the numbers change as it moves. This builds into an exploration of how the number chart can be used as a tool to aid and model addition and subtraction using tens and ones. The lesson is outlined in detail including curriculum links, discussion points, extension activities and student handouts. This sequence is part of the reSolve: Mathematics by Inquiry program.

Year level(s) Year 3
Audience Teacher
Purpose Teaching resource
Teaching strategies and pedagogical approaches Mathematics investigation
Keywords addition, number charts, place value, subtraction

## Curriculum alignment

Curriculum connections Numeracy
Strand and focus Number, Build understanding, Apply understanding
Topics Addition and subtraction, Place value
AC: Mathematics content descriptions
ACMNA053 Apply place value to partition, rearrange and regroup numbers to at least 10 000 to assist calculations and solve problems
ACMNA054 Recognise and explain the connection between addition and subtraction
ACMNA055 Recall addition facts for single-digit numbers and related subtraction facts to develop increasingly efficient mental strategies for computation