I’m coaching elementary math / CS to a few kids of age 9-12 from my extended family and I often struggle to find or invent relevant problems for them to train on.
Do you have pointers to problem sets that I could use for this purpose?<p>Concrete examples of topics for which I could use problem sets:
computing angles in elementary geometry
fractions
solving linear equations
combinatorics
unit conversion
weed through these search hits for something that fits your student bodies. Many might be above a lot of them, but a quick looks showed a few for the younger people.
<a href="https://www.google.com/search?q=math+problem+sets&rlz=1C1CHBF_enCA924CA924&oq=math+problem+sets&gs_lcrp=EgZjaHJvbWUyBggAEEUYOTIGCAEQRRg90gEKMTA3NDJqMGoxNagCALACAA&sourceid=chrome&ie=UTF-8" rel="nofollow noreferrer">https://www.google.com/search?q=math+problem+sets&rlz=1C1CHB...</a>