I'm not a maths teacher but can generally do maths so I've been asked to help my nephew (12 yrs old, but only yr 6 as I'm not in the UK) as he is totally lost in his maths class. So I started today with a keystage 1 test and realised he can only add by counting on his hands, can't explain how he gets his answers, and missed some questions and lots of points on the test becasue of it. We tried a few different ways and he just doesn't get chunking but seems fine with the old method.
134
345
479
if that makes sense.
Am I OK to just skip past chunking or will he need to understand it for something else as he gets further on. Needless to say I suppose, but he can't do multiplication, division other than the simple stuff in his head either.
Are there simplier version for these that they need to know before moving on to the old fashioned way?
Similarly written problems seem a total mystery I tried simplifying one using real people, real apples and it seemed no clearer. but I'm hoping that will come once I build up his general confidence. (obv didn't tell him the level of his paper today)
I am also pushing his parents to go back to the school and insist he needs more help. Sending him home with trig and algebra is crazy and demoralising. Unfortunaly the class room assistant can't do the maths they are getting at the moment so she isn't helpful either.
Thankyou for any help and advice,