Clearly I need to go back to school! Why is this wrong?

[SilentHeadphones]

DD came home with a workbook to show us. She asked why it is wrong. Honestly, I'm stumped. Someone explain!

More photos in OP's post at 18:40

Post edited by MNHQ

Please ask the teacher for the right answer and tell us!
I admit that I have just spent 6 weeks doing sweet fa, but I am a secondary teacher (not maths) and I don’t get it!

I think the teacher has marked the last one incorrectly as there can only be a maximum of 5 spots on the dice / dominoes.

You know we will patiently puzzle this fucker out and on Monday it'll turn out to be a misprint.

Luckily mine don't have homework any more because I stopped being useful after primary, although one dinner spent yelling Macbeth lines furiously while attempting a meat and tatty pie sticks in my mind.

8 should be 4 coloured dots on each side.
5 should be 4 coloured dots and 1 dot on the other side.
7 should be 5 coloured dots and 2 dots on the other side.
9 should be 5 coloured dots and 4 dots on the other side.

The teacher has made a mistake with the last question and I assume the homework was to do with number bonds, ie different ways to make the number 9 etc using two numbers less than 5.

I think it's just marked wrong tbh. I kind work out how 2,3,4 could be wrong but not 5. And going by the second exercise they should all be right. Are there no instructions? There might be some special configuration of dominoes that we don't know about (e.g. right number has to increase each time)

Ok, so they have one book which is a cross between a textbook and a workbook and one which is purely workbook.
I'll post the previous page in text/work-book and corresponding page in workbook.
Then I'll post the pages in question, text/workbook and workbook.

Previous pages

Pages in question

Her dice should match the dots they don’t. The bottom one is wrong as well

Her dice should match the dots they don’t. The bottom one is wrong as well
But the ones in the printed example (red dots) don't match the domino.

Has she changed any of the answers after marking? I've marked work as incorrect. Then the pupil has rubbed out the answer and changed it so it looks like I've marked it wrong.
For example, 6 + 3= 8 marked incorrect.

Child rubs out 8 and puts 9. Cross is still there.

But the ones in the printed example (red dots) don't match the domino

You're all looking at it wrong. As I said upthread, the middle dots simply represent 1 to 10, not the left and right side of the dominos.

Therefore the one where she has coloured in the first 8 dots, not 4 and 4, is correct.

Also, is the first one wrong because the dots aren't coloured in properly. Are they getting them to practice clealy colouring in dots for a computer marked multiple choice test?

My guess is, first exercise is to show 5 + a= b. So always colour in five dots on the left, plus however many on the right. Teacher has mismarked last one. Exercise two, going by the example, is to fill in the correct number of dots sequentially, ignoring the pattern on the domino. Not clear and your daughter should have been told why it was wrong. Whatever happened to feedback?

After looking at all the pages you've posted OP, I'm going to have to agree with @Coconut0il - there isn't really any other explanation?!

We’re there any verbal instructions given with it? Otherwise it looks like it’s been marked incorrectly.

On the face of it it’s a fairly bog standard lower primary page on representing numbers to 10 in different ways. But none of the things you might normally cover with children of that age fit the marking.

I think Coconut’s got it.

I think the teacher was tired and marked them wrong.

You are given 2 sides of the dice and 5 dots per side.

What your DD is wrong, because she didn't match the dots correctly.

The last one should also be wrong (you can't draw 6 dots if you are only give 5 spaces per side).

How many of us passed GSCE or O levels in Maths?
I've got 2 maths O levels and I haven't a chuffing clue!

And I think it’s because the teacher had a brain fart with the circles not corresponding to spots, ie he/she was thinking 6 circles instead of 5 so thinks your dd has put 1 too many each time apart from the last one where there’s such a small mark in the 9th circle she’s given benefit of doubt. She was ok with the first one but went down the 6 tangent when she saw 6. That’s my theory anyway.

I think I have it!!!!

The first face MUST ALWAYS BE A 5 as in the example and the other face is what you need to add to 5 to get the answer in the end column....I think...

I’m fairly certain the five dots per side is a deliberate representation to help with visualisation of numbers though. It’ll help with subsitising later on.

If you’re supposed to colour the dots to match the domino and you’ve given 2groups of 5 dots to do that, then it’s a daft question.

I think that the aim of the exercise is to encourage pupils to partition the numbers into 5 and something. It will make mental addition easier if a child can add on 8, for example, by adding on 5 (which is easy) and 3 more. Approaches like this are more common with the introduction of new maths curriculum.

Not sure about the marking though because if that was the aim of the exercise then it is not how I would have marked it. (Teach year 3 BTW).

Might not be right, but that's what I think!

That still makes the last one marked incorrectly thoughChesntoots’.

A-level math - out the window! I hate these things, I used to think woohoo - I'll be able to help my kids with math no problem! I think the teacher has misunderstood as from your most recent posting they all look correct to me. Unless the first one was always supposed to have 5 as the initial number.