 Follow Musings of a Mathematical Mom on WordPress.com
Search Blog

Recent Posts
 How Many? – A book and a math adventure July 27, 2018
 Naming Numbers at Bedtime April 16, 2018
 Main Line Math Festival on April 22 March 18, 2018
 Funville Adventures is on a Web Tour! February 19, 2018
 Secret 3digit numbers January 28, 2018
Archives
Follow me on Twitter
My TweetsTags
 #mathed
 #tmwyk
 1st grade
 2 years old
 2nd grade
 3 years old
 3Dgeometry
 3rd grade
 4 years old
 4th grade
 5 years old
 6 years old
 7 years old
 8 years old
 addition
 amusing conversation
 amusing discussion
 amusing story
 announcement
 arithmetic
 arithmetic games
 art
 big numbers
 books
 brainteasers
 building
 class
 combinatorics
 cool games for kids
 counting
 discussion
 division
 dolls
 drawing
 functions
 fun math
 Funville
 games
 general teaching
 geometry
 Golden Key Russian School
 graph theory
 group activity
 guest post
 handson activity
 interview
 jane kats
 Kindergarten
 learning games for kids
 lesson
 little kids
 logic
 Main Line Classical Academy
 manipulatives
 mathematical art
 math festival
 math personified
 math play
 math with little kids
 measurement
 multiplication
 not math
 patterns
 philosophical
 place value
 problem solving
 puzzle
 puzzles
 review
 sets
 subtraction
 symmetry
 time
 visual puzzles
 what is math
Blogs I Follow
 Number Loving Beagle
 Math Book Magic
 Mike's Math Page
 Math Minds
 Becoming the Math Teacher You Wish You'd Had
 Handson physics for kids of all ages
 MATH and SCIENCE with my KIDS
 Talking Math with Your Kids
 Natural Math
 Новости Мышкиного Дома
 Musings of a Mathematical Mom
 ШКОЛЬНЫЙ БЛОГ: Русская Школа "Золотой Ключик" в Филадельфии SCHOOL BLOG Golden Key Russian School in Philadelphia
Tag Archives: sets
Family Regrouping
Two sisters, two parents, two cousins, and four grandparents, all met up at the park (true story). During the car ride home, one of the sisters (lets call her Katie), exclaimed, “There were ten of us at the park.” The … Continue reading
Posted in Uncategorized
Tagged #tmwyk, 6 years old, arithmetic, counting, games, sets, word math games
4 Comments
A bit of Set Theory
Katie and I joined my sister’s Golden Key Russian School – Katie attends and I help out my sister with the math classes. We hope to write semidetailed descriptions of the lessons on the school’s blog, but here I will … Continue reading
Onetoone correspondence – Not always obvious to kids!
There are some very hard problems in combinatorics that involve showing that there is a bijection (onetoone correspondence) between two set of objects, thus showing that the two sets have the same number of elements. On the other hand, we … Continue reading