Find the missing part in an equation
Lesson details
Learning outcome
I can find the missing part in an equation.
Key learning points
- Number sense and subitising skills can be used to help find missing parts.
- Patterns in the number system can be used to help find missing parts.
- Working systematically can help to spot number patterns.
Keywords
Equation - Shows that one number or expression is equal to another.
Part - Any numbers that can be added together to form a whole.
Whole - The result of adding two or more parts.
Common misconception
Children may think the missing number in an equation always has to be the whole.
Encourage children to record their thinking, bringing attention to the missing part by underlining it.
Teacher tip
Encourage children to work systematically and build number sense by predicting the next missing part. Encourage checking to see if they are right. Continue using the bar model during Learning Cycle 2 to highlight the change in the parts.
Licence
Lesson video
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Prior knowledge starter quiz
6 Questions
Q1.Without counting, tell me how many balls are in the picture?
Q2.Which of these numbers is a part in this equation? 4 + 2 = 6
Q3.Match the amounts that are equal.
2 + 4
5 + 3
9 + 1
Q4.Which equation can represent this picture?
Q5.There are 3 frogs in the pond and 6 frogs on a log. Which equation would I write to find out how many frogs there are altogether?
Q6. = 4 + 5
Assessment exit quiz
6 Questions
Q1.There are 6 pebbles altogether. Fill in the missing part.
Q2.What does the 4 represent in this equation? 6 + 4 = 10
Q3.Izzy has this bead string made up of 10 beads. She hides some beads. Which bar model represents this?
Q4.Jun rolls two dice. He writes this equation to show the number he rolled and the total altogether. 5 + _ = 8 Which of these dice represents the missing part in the equation?
Q5.Izzy has 6 counters. She hides 2. Fill in the missing part to show how many she can still see.
Q6.Use the number patterns in the equations to find the missing part in this equation?
To help you plan your 1 maths lesson on: Find the missing part in an equation, download all teaching resources for free and adapt to suit your pupils' needs...
To help you plan your 1 maths lesson on: Find the missing part in an equation, 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 1 maths lessons from the Additive structures: addition unit, dive into the full primary maths curriculum, or learn more about lesson planning.