UCLA Olga Radko Endowed Math Circle

ORMC Meetings • 2021-2022 Academic Year

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For meetings prior to Fall 2021, visit the Circle Archive.

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We will review binary numbers based on chapters 20 and 21 from the book.


We will cover Chapters 22 and 23 from the book, including a brief review of Roman numerals. We will not be doing Quiz 6.


In this class, we will finish comparing binary digits and decimal digits (Chapter 23), and start discussing parity (oddness and even-ness of numbers, Chapter 24). On the way we will find time for a brief review of Roman numerals.


We will do Problem 23.21 as a warm up exercise, and then continue to Lesson 24, which is about Odd and Even numbers.


We will review last week's homework and then continue to explore parity -- the idea of odd and even numbers -- following Lesson 25 within our workbooks.


We will study lesson 26, in which we learn to use binary decompositions to perform a magic trick. From there we will review how to use the Russian abacus to represent, add and subtract multi-digit numbers.


We will cover lesson 27, and practice our magic trick. Then we will review using the abacus to calculate sums and differences (from Lesson 15 and 16).


In this class, taught by guest instructor Professor Kim, students will learn how to add and subtract binary numbers by modifying their abaci.


We will finish up discussion of adding and subtracting binary numbers, and then take a recap quiz on binary numbers, odd and evens and Roman numerals. We will then discuss Chapter 29; using binary numbers to represent letters and characters. Finally we will learn how to play two mathematical games.


We will review Chapter 30, the Moebius strip, as well as doing some problems that review some of the materials that we covered in the last quarter.


We will cover Chapter 31, which introduces coordinates for the line and plane. Time permitting, we will do a review of Roman numerals.