Basic divisibility rules, patterns, and sequences.
Traditional Russian math preparation (MechMat style) emphasizes: Russian Math - Amazon.com podgotovka k olimpiade po matematike 3-4 klass
Knight/Knave problems, weighing puzzles, and "magic squares." Basic divisibility rules, patterns, and sequences
Basic counting (how many ways to color a flag, etc.). 💡 Why "Russian Math" is Unique Basic divisibility rules
Often considered the "gold standard" for early competitive math. Her series focuses on "non-standard" problems that require logical leaps rather than just computation.