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Expanded Subtraction: Learn and Practise through Games

In this lesson, students will develop a deeper understanding of why borrowing is necessary for subtraction. Students will be able to master the skills involved through modelling and repetition and from playing games.
Class

What's included

Meets on Demand
schedule meetings as needed
30 mins
per session
Teacher support

Class Experience

The advantage of being one-to-one is that I can quickly find out what the student already knows and adapt the lesson to their needs to either recap prior learning or move at a rapid pace to teach new concepts. While this lesson focuses on subtraction methods, I am keen to build on the student's skills and they are welcome to join as many classes as they like to either repeat their skills or develop onto other calculation skills to apply to problem solving or ask me to support with any of their maths questions.

During the first half of this first session, I will first set a subtraction calculation (3-digit subtract a 3-digit number) like in my photo, to see what the students already knows. I will model the expanded method (see my photo) explaining the benefits of the model and the how it represents 'real-maths' rather than just a quick way to solve a problem. I will explain to them how understanding this will ensure they become better mathematicians and therefore mastering maths (having a deeper understanding). 
Once I have modelled one, the children can follow step-by-step to set one out (on paper). If they feel confident, they can explain the steps. Alongside this, I will model the quick way (which many children will have seen before). Modelling this I will show how 'borrowing a 1' from 'a neighbour' doesn't actually mean one but but 10 or one 100 (and I will refer to the expanded model). Once these are side by side, children are often quick to see the links between the two methods.
We will spend the second half of the lesson playing a dice game where the aim will be to make 1000 by subtracting two numbers. The closest to 1000 wins. Often children like to continue this game with family members to try to get to zero.
Children may wish to continue playing this at home or booking more sessions to apply their skills.
Students will improve their understanding of borrowing in the written methods of subtraction. 
Children may wish to continue playing this at home or booking more sessions to apply their skills.
Learning Goals
Students will improve their understanding of borrowing when using the written methods of subtraction. 
Students will develop a more rapid mental maths speed.
learning goal

Other Details

External Resources
Learners will not need to use any apps or websites beyond the standard Outschool tools.
Sources
A couple of dice, pencil/pen and paper (or whiteboard and pens).
Joined July, 2023
Profile
Teacher expertise and credentials
Non-US Teaching Certificate in Elementary Education
I have been a teacher in the UK for 22 years and been a maths leader for over 12 years including working for White Rose (a leading Maths Hub in the UK supporting teachers and parents). My approach is similar to the White Rose approach which intwines with educational theories and concepts including metacognitive awareness and retrieval practice: I believe the more a child thinks about the skills that they use and understands numbers and practises a skill the more it's embedded in their memory.

I have taught for 3 years in Kuala Lumpur, Malaysia. Whilst I don't have the TEFL qualification, I do have 3 years of teaching classes of children in a classroom who mostly all had English as a second language (ESL) or English as a foreign language (EFL). During teaching in Malaysia, I learnt how to adapt my teaching for all types of learners styles taking into account English as an additional language.

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Live 1-on-1 Lessons
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$36

per session
Meets on demand
30 min

Live video meetings
Ages: 7-12

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