/tags/math/ Recent content in Math on Andriy Utkin Hugo en Mon, 30 Oct 2023 23:11:57 +0000 /2023/mathtime/ Mon, 30 Oct 2023 23:11:57 +0000 /2023/mathtime/ <p>For the last few weeks my family is up to our ears in maths exercises and brain teasers as my daughter has developed a big interest.</p> <p>I am setting up a &ldquo;newsletter&rdquo; for puzzles. Once in a few days I would send a few exercises. Readers can send their solutions if they want, and I will mark them. This would cost a few pounds per month.</p> <p>To sign up, email to <a href="mailto:mathtime@autkin.net" >mathtime@autkin.net</a> with your kid(s) age, grade and goals.</p> /2023/finger-counting/ Thu, 28 Sep 2023 23:46:58 +0100 /2023/finger-counting/ <p>Today during family dinner my kiddo started finger-counting. I shared what I knew about a less popular system which allows counting to 12 on one hand:</p> <blockquote> <p>Finger-counting systems in use in many regions of Asia allow for counting to 12 by using a single hand. The thumb acts as a pointer touching the three finger bones of each finger in turn, starting with the outermost bone of the little finger. One hand is used to count numbers up to 12. The other hand is used to display the number of completed base-12s. This continues until twelve dozen is reached, therefore 144 is counted. (<a href="https://en.wikipedia.org/wiki/Finger-counting#Asia" class="external-link" target="_blank" rel="noopener">Wikipedia</a>)</p>