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# reSolve: Algebra: Equivalence

This sequence of two lessons builds students' understanding of equivalence as balance. The equals sign is used to indicate the same value on both sides of an equation. Students develop their understanding of equivalence by looking at balancing scales with blocks of different weights. 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 program.

Year level(s) Year 2
Audience Teacher
Purpose Teaching resource
Teaching strategies and pedagogical approaches Mathematics investigation
Keywords number patterns, mass, balance scales, mathematical expressions, number patterns, equivalence

## Curriculum alignment

Curriculum connections Numeracy
Strand and focus Number, Algebra, Build understanding, Apply understanding
Topics Properties of number, Algebraic expressions
AC: Mathematics (V9.0) content descriptions
AC9M2A01
Recognise, describe and create additive patterns that increase or decrease by a constant amount, using numbers, shapes and objects, and identify missing elements in the pattern

AC9M2N04
Add and subtract one- and two-digit numbers, representing problems using number sentences and solve using part-part-whole reasoning and a variety of calculation strategies

Numeracy progression Additive strategies (P7)
Number patterns and algebraic thinking (P3)
Number and place value (P5)