- Lesson 1
Compare the structure of problems with one or two unknowns
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- Lesson 2
Represent the structure of a problem with two unknowns in context
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- Lesson 3
Explain why there is sometimes only one solution to a problem
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- Lesson 4
Represent and solve problems with two unknowns efficiently
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- Lesson 5
Use a bar model to represent spatial problems with two unknowns
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- Lesson 6
Explain how to represent an equation with a bar model
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- Lesson 7
Solve problems with two unknowns in a range of contexts
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- Lesson 8
Explain how you know you have found all the possible solutions to a problem with two unknowns
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- Lesson 9
Explain how to balance an equation with two unknowns
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- Lesson 10
Solve problems with two unknowns with one, several and infinite solutions
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