Starter quiz
- Which expression is represented by this bar model?
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- ✓
- ✓
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- Select the bar model that correctly represents the equation .
- Given that , which of these are also true?
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- ✓
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- ✓
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- This bar model represents the initial equation . What needs to be done to the top bar to maintain equality?
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- ✓
- ✓
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- This bar model represents the initial equation . What needs to be done to the top bar to maintain equality?
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- ✓
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- ✓
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- These 4 bar models represent operations performed on the equation . Match the bar models labelled A, B, C, D with the equivalent equation they represent .
- A⇔✓
- B⇔✓
- C⇔✓
- D⇔✓
Exit quiz
- Which equations are represented by this bar model?
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- ✓
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- Which equations are represented by this bar model?
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- ✓
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- ✓
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- If , which of these equations are also true?
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- ✓
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- These scales are not balanced. The mass of all the square objects are the same. Which statements are definitely true?
- The triangle is lighter than 1 square.
- The triangle is lighter than 2 squares. ✓
- The triangle has the same mass as 1 square.
- The triangle has the same mass as 2 squares.
- The triangle is heavier than 1 square.
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- The diagram shows a balanced scale on the left. When an operation is performed to the RHS, it is not balanced. What operation must be performed to the LHS to maintain equality?
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- ✓
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- The diagram shows a balanced scale on the left. When an operation is performed to the LHS, it is not balanced. What operation must be performed to the RHS to maintain equality?
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- and
- and ✓
- ✓
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Worksheet
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Presentation
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Lesson Details
Key learning points
- The equals sign means that the two sides of the equation have the same value.
- This can be described as the expressions balancing.
- The equality of the expressions can be represented with a bar model.
- It is possible to rearrange equations to find the family of alternative versions of the equation.
Common misconception
10 - x = 2 means that 2 - x = 10
Using bar models can help pupils understand rearranging additive relationships at an early stage.
Keywords
Equation - An equation is used to show two expressions that are equal to each other.
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