Compare the structure of problems with one or two unknowns
Lesson details
Learning outcome
I can compare the structure of problems with one or two unknowns.
Key learning points
- Unknowns can be connected additively.
- Unknowns can be connected multiplicatively.
- Representations can show if unknowns are related additively or multiplicatively.
Keywords
Difference - The difference is the result of subtracting one number from another. How much one number differs from another.
Common misconception
Pupils struggle to understand how to represent the number rods to show the difference when trying to find the missing rod.
Ensure pupils spend time representing each question with an equation then match this with the number rods. This may help them to visualise the missing part as well.
Teacher tip
If the pupils have not spent much time yet with number rods, ensure they are allowed time to explore these for themselves.
Licence
Lesson video
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Prior knowledge starter quiz
6 Questions
Q1.Write in the missing number: 30 + = 180
Q2.Tick the possible solutions for ___ + ___ = 180
Q3.What is the missing angle? °
Q4.Without applying commutativity, how many possible solutions are there if each of the missing values are integers? ___ + ___ = 10
Q5.Which pair of numbers that sum to 10 have a difference of 4? ___ + ___ = 10
Q6.Write the number that is two-thirds the size of 15
Assessment exit quiz
6 Questions
Q1.Two rods are equivalent to the dark green rod. One of them is red. What is the missing rod?
Q2.Two rods are equivalent to the dark green rod. One of them is light green. What is the missing rod?
Q3.Two rods are equivalent to the yellow rod. What could be the missing rods be?
Q4.Two rods are equivalent to the pink rod. What could be the missing rods be?
Q5.Two rods are equivalent to the blue rod. There is a difference of red between the rods. What rods could they be?
Q6.Two rods are equivalent to the dark green. One rod is twice the size of the other rod. What rods could they be?
To help you plan your 6 maths lesson on: Compare the structure of problems with one or two unknowns, download all teaching resources for free and adapt to suit your pupils' needs...
To help you plan your 6 maths lesson on: Compare the structure of problems with one or two unknowns, download all teaching resources for free and adapt to suit your pupils' needs.
The starter quiz will activate and check your pupils' prior knowledge, with versions available both with and without answers in PDF format.
We use learning cycles to break down learning into key concepts or ideas linked to the learning outcome. Each learning cycle features explanations with checks for understanding and practice tasks with feedback. All of this is found in our slide decks, ready for you to download and edit. The practice tasks are also available as printable worksheets and some lessons have additional materials with extra material you might need for teaching the lesson.
The assessment exit quiz will test your pupils' understanding of the key learning points.
Our video is a tool for planning, showing how other teachers might teach the lesson, offering helpful tips, modelled explanations and inspiration for your own delivery in the classroom. Plus, you can set it as homework or revision for pupils and keep their learning on track by sharing an online pupil version of this lesson.
Explore more key stage 2 maths lessons from the Solving problems with two unknowns unit, dive into the full primary maths curriculum, or learn more about lesson planning.