The following books by Oleg Gleizer and Olga Radko are based on the lessons they taught at ORMC:

The book teaches kindergarten and 1st grade students to break (positive integral) numbers into parts in all the possible ways. The book uses the developed technique to explain (prove) commutativity of addition of positive integers. The book also explores the concepts of digits and numbers, odd and even numbers, operations (functions), and inverse operations in an age-appropriate fashion. The book was tried and tested at Los Angeles Math Circle (LAMC), a free Sunday math school for mathematically inclined children run by UCLA Department of Mathematics. The book was used as a basis for a year-long enhancement math course at a variety of other locations, from math circles and after-school programs to a full-fledged elementary school. The second edition of the book is a feedback-based improvement of the first edition. It has two extra chapters, more than sixty extra problems, solutions to harder problems, ten quizzes, and more. The second edition has two parts. This book is Part 1.

Math Adventures with ORMC, Level 1 is an enrichment course for children in grades two to four. ORMC stands for UCLA Olga Radko Endowed Math Circle. The Circle is a free Sunday math school for gifted children run by UCLA Department of Mathematics. The book is based on the lessons the authors have given at the Circle. This is a workbook for students.

Math Adventures with ORMC, Level 1 is an enrichment course for children in grades two to four. ORMC stands for UCLA Olga Radko Endowed Math Circle. The Circle is a free Sunday math school for gifted children run by UCLA Department of Mathematics. The book is based on the lessons the authors have given at the Circle. This is a teacher's companion for the Level 1 workbook.

Math Adventures with ORMC, Level 2 is a year-long enrichment math course for children in grades four to six. ORMC, short for UCLA Olga Radko Endowed Math Circle, is a free Sunday math school for gifted children run by UCLA Department of Mathematics. The book is based on the lessons taught at ORMC. The book is a part of the series, Math Adventures with ORMC. It can be studied independently of other books in the series. The perspective of the book is that of an active modern day US university professor. The main goal of the book, as well as of the Math Adventures with ORMC series as a whole, is to prepare students for taking, and genuinely enjoying, math and computer science classes in a top-tier 21st century US university.

Math Adventures with ORMC, Level 2 is a year-long enrichment math course for children in grades four to six. ORMC, short for UCLA Olga Radko Endowed Math Circle, is a free Sunday math school for gifted children run by UCLA Department of Mathematics. This book is a teacher's companion (TC) for the workbook (WB).