Equations for Finding Unknown Numbers
- Year levels
- Years 6–7
- File type
- Microsoft PowerPoint
- Use
- Digital activity
- Subject
- Algebra, Maths
- Topic
- Equations, Solving Equations
- Use
- Digital activity
- Australian Curriculum content descriptions
- AC9M7A03 — solve one-variable linear equations with natural number… AC9M7A02 — formulate algebraic expressions using constants…
From the author
About this resource
Powerpoint presentation with 8 slides to introduce the idea of solving equations with simple calculations
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In the classroom
Teaching tips & learning objectives
Learning objectives
Translate a number riddle into a one- or two-step equation
Solve one- and two-step linear equations to find an unknown value
Work out missing values in an algebra wall
Teaching tips
Because each solution appears on the slides, students could attempt a riddle before the worked answer is shown.
The .pptx file is editable, so the numbers in the riddles could be changed to make extra practice problems.
Skills covered
Writing equations — turning spoken-style number riddles into algebraic expressions
Working backwards — undoing each step of a riddle to reach the starting number
Reasoning with algebra walls — using the given bricks to find the missing ones
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Australian Curriculum (Version 9.0)
Australian Curriculum content descriptions
Australian Curriculum content descriptions
Australian Curriculum content descriptions
- AC9M7A03 — solve one-variable linear equations with natural number solutions; verify the solution by substitution
- AC9M7A02 — formulate algebraic expressions using constants, variables, operations and brackets
Core concepts
Core concepts
Unknown number
Linear equations
Algebra walls
Topics
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