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Let’s talk 1

Uses maths manipulatives and tools, including a number line, to model various strategies for solving 23-19.

Additional details
Year level(s)	Year 1, Year 2
Audience	Student, Teacher
Purpose	Teaching resource, Teaching strategies
Format	Video
Teaching strategies and pedagogical approaches	Concrete Representational Abstract model, Targeted teaching
Keywords	addition, subtraction, difference, number line, solution, explicit teaching
Curriculum alignment
Curriculum connections	Numeracy
Strand and focus	Number, Build understanding
Topics	Place value, Addition and subtraction, Operating with number
AC: Mathematics (V9.0) content descriptions	AC9M1N04 Add and subtract numbers within 20, using physical and virtual materials, part-part-whole knowledge to 10 and a variety of calculation strategies 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 (P6) Number and place value (P3)
Copyright details
Organisation	NSW Department of Education
Copyright	© State of New South Wales (Department of Education), 2020 Creative Commons Attribution 4.0, unless otherwise indicated.