Solving problems with two unknowns
Why this, why now
In this unit pupils will compare and represent the structure of problems with two unknowns using a bar model. They will systematically solve problems with two unknowns using trial and improvement.
Prior knowledge requirements
- Ardaydu waa inay yaqaanaan aasaaska maadada.
- Ardaydu waa inay awoodaan inay raacaan tilmaamo fudud.
Unit 19 / 21
Solving problems with two unknowns
In this unit pupils will compare and represent the structure of problems with two unknowns using a bar model. They will systematically solve problems with two unknowns using trial and improvement.
10 lessons- Solve problems with two unknowns with one, several and infinite solutions
- Compare the structure of problems with one or two unknowns
- Explain how to balance an equation with two unknowns
- Explain why there is sometimes only one solution to a problem
- Represent and solve problems with two unknowns efficiently
- Explain how to represent an equation with a bar model
- Represent the structure of a problem with two unknowns in context
- Explain how you know you have found all the possible solutions to a problem with two unknowns
- Use a bar model to represent spatial problems with two unknowns
- Solve problems with two unknowns in a range of contexts