Singapore Maths - quick help needed

[MissusBea]

Can anyone explain how to fill in this worksheet? I understand how to draw the 'real story / maths story' part of it but not how to fill in the circles to show the regrouping. Its homework from a Year 3 child I tutor privately and he needs help / reinforcement in the methods ..... but I am struggling myself to understand how to complete this sheet.

[MissusBea]

Picture here

[TheTyrannyOfMAGENTA]

For the circle, isn't the first one for example just 2 and 17? I assume they are getting used to the idea of 'trees' so they can do prime factors later on?

[MissusBea]

no its partitioning or 're-grouping'. I think its 20 (10 x 2) and 14 (7 x 2) - but not confident!

[Hulababy]

Hmmm - we use a bar for dividing, using Singapore Maths.

The tree bit, into just two sections, even when dividing by 3+ looks confusing. Trying to work it out.

[Hulababy]

Is it just splitting the number up into two parts which are then more easily divisible by that number?

[PolkadotsAndMoonbeams]

I think it might be like 24 and 10, then 30 and 27 for the next one perhaps?

[PolkadotsAndMoonbeams]

So 24 and 10 in the circles, then 12+5 in the boxes?

[Hulababy]

So first is 20 and 14

Start with 34
Regroup to 3 tens and 4 ones
Divide the tens into 2
1 ten in each group and 1 ten left over
Regroup this ten into 1s, so now have 14 ones
Divide the 1s by 2
7 in each group

So each group now has 1 ten and 7 ones

[Hulababy]

Using that:
(b) 30 and 27
(c) 40 and 20
(d) 80 and 16
(e) 60 and 15

[Hulababy]

Easier with the 10s and 1s as actual images

[gallicgirl]

You're making it up. Give over.

[happy2bhomely]

Hulababy is right. We use these books for home ed.

[PolkadotsAndMoonbeams]

I don't remember it being so complicated when I learned how to do division!

[Hulababy]

Singapore maths is really just a way to visualise the maths question - models and images are very big in primary maths right now.

Singapore Maths doesn't give you the answer. It just shows you a way to look at it and 'see' what you need to do.

[happy2bhomely]

My DD really, really struggled with maths until we tried this method. She used to cry doing maths. Now she enjoys it because it has given her a way to 'see' numbers in a way she just couldn't before.

It is not for everyone though, My 6 yr old son is brilliant at mental maths and finds the work books tedious and pointless.

[TheTyrannyOfMAGENTA]

What? And what do they do when they don't have manipulatives? Isn't it easier to use your times tables?

[Hulababy]

They are using times tables to still do this.
To do 57 / 3 then still use their knowledge of the 3 times table.

They know that 3 tens is 30
So then they have 27 left over - if they know 3 tens are 30, they can work out quickly that 27 / 3 is 9.

so 57 / 3 is 10 and 9 = 19

[marcopront]

Not really the point but why are you tutoring someone following a system you don't know about?

[IsayIdontknow]

Just wondering if anyone knows if which are the best textbooks for Singapore maths? DS is in year 2 and I am looking at different ways of doing mental arithmetics with him.

[HarveySchlumpfenburger]

And what do they do when they don't have manipulatives? Isn't it easier to use your times tables?

The point is that they move on from needing to use the manipulatives, to diagrams, and then the abstract form in the page shown. They'll use their times tables knowledge to do this and to do it mentally but they'll have an understanding of what they're doing and how it works as well as being able to do it quickly.

Isay. As far as I know, if you are in the UK, there's only a choice of 'Maths no problem' or 'Inspire' from OUP. The first is aligned to the UK curriculum but uses singapore methods. The second an Anglicised version of a Singapore one and I think is still aligned to the Singapore curriculum.

[MissusBea]

hulababy thanks, that sounds right,

marcopront - fair question. I was teaching some of these children / their siblings before their school went over to Singapore maths. My own school doesn't use it. I need to upgrade quickly or let them find another tutor as it's challenging to change over without training.

Rafals that's helpful - - had ordered the Maths No Problem one but didn't know about the OUP so will check it out.

[HarveySchlumpfenburger]

I'd stick with one or the other. I don't know if they'd match up very well.

[IsayIdontknow]

Thanks for the info Rafals!

[marcopront]

MissusBea

I am sorry if I sounded a bit harsh. I teach IB and so many students are tutored by people who know nothing about it and actually hinder the children rather than help them. It is so good to hear a tutor accept they need to know the system.

[HopeClearwater]

Be careful with Singapore. Totally different way of teaching maths, from another culture, and doesn't always fit with the Gove-ian grammar-school 1950s requirements of KS2 SATs. NC maths would rather have a child learn a mechanical procedure than spend time building a picture of the mathematical concepts in a child's mind.