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Sam Blatherwick Profile picture
Sam Blatherwick
@blatherwick_sam
Head of Maths at @ashbyschool. Head full of maths. In a corner of the fox county.
Jun 12, 2022 • 26 tweets • 9 min read
Either side of half term I've been teaching vectors to Yr 10 higher.

I wanted to put a thread together on how I scaffold the leap to vector algebra, and how vector algebra is a lovely vehicle for interleaving.

#mathschat Image I did loads of vector thinking a couple of years ago, especially prompted by @danicquinn's #mathscpdchat in Nov 2019

We then taught vectors in y11, around the same time as translations.

Later, I moved it to y10, straight after ratio and algebra work

Dec 15, 2021 • 25 tweets • 8 min read
because of a change of scheme of work, the pandemic, the groups i've been put on... i've not taught surds for over 3 years.

***I LOVE TEACHING SURDS***

and I have got to teach it this week 🥳

(yr 11, aiming for grade 7/8) Image my starting point with surds is always thinking about squares, but actually I had a funny coincidence with the starter sheet that lesson.

The question had a changing subject of the formula Q as below. Image
Jul 2, 2021 • 15 tweets • 8 min read
I have been working my yr 10s hard this week on finding equations of a line from pt and gradient or two points. However, lots of my time has been spent on gradient as a concept and there is a lot of heavy lifting done by the procedures initially students are comfortable with the idea that y=mx+c is something to do with equation of a line, but I need the key features of this to be fluent so we swot this to begin with

not sure about my spelling here!
Apr 30, 2021 • 19 tweets • 9 min read
Factorising non-monics

I had read about doing this before factorising monics.

So I gave it a go.

Fans of #donsteward 's boxes (donsteward.blogspot.com/2019/02/boxes-…) will like this!

This is y10 set 2 aiming for grade 6/7. Some of them will do A-level.

#mathschat #mtbos #mathscpdchat ImageImage I appreciate this is leaving nothing to chance, direct teaching. This took four lessons in total.

I was a little delayed, when, halfway through the week almost half the class got put into self-isolation and I was teaching it blended with 13 at home and 16 in the classroom.