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Prime Numbers Are like Monkeys
[Photo by mape_s.] I’m afraid that Math Club may have fallen victim to the economy, which is worse in our town than in the nation in general. Homeschooling families have tight budgets even in the best...
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Game: Target Number (or 24)
[Photo by stevendepolo.] Math concepts: addition, subtraction, multiplication, division, powers and roots, factorial, mental math, multi-step thinking Number of players: any number Equipment: deck of...
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Memorizing the Math Facts
The most effective and powerful way I’ve found to commit math facts to memory is to try to understand why they’re true in as many ways as possible. It’s a very slow process, but the fact becomes...
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Quotable: Times Tables Are Not Math
Important note: times tables are not math. Math doesn’t need to be made fun; it already is fun. Memorizing your times tables is a rote activity, it requires a fair bit of repetition for most, and it...
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Game: Times Tac Toe
Photo by jma.work via flickr. I’ve been working on a book of math games for homeschoolers and other teachers. I hope to get it published later this year, but the editing drags on. Would anybody like to...
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How to Conquer the Times Table, Part 1
Photo of Evil Erin times 5 (and dog times 2), via flickr. Perhaps the biggest challenge for any middle-elementary math student is to master the multiplication facts. It can seem like an unending task...
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How to Conquer the Times Table, Part 2
Photo of Eeva times 6, by Eric Horst, via flickr. The question is common on parenting forums: My daughter is in 4th grade. She has been studying multiplication in school for nearly a year, but she...
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How to Conquer the Times Table, Part 3
Photo of Javier times 4, by Javier Ignacio Acuña Ditzel, via flickr. If you remember, we are in the middle of an experiment in mental math. We are using the world’s oldest interactive game —...
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How to Conquer the Times Table, Part 4
Photo of Miss Karen (and computer) times 3, by Karen, via flickr. If you remember, we are in the middle of an experiment in mental math. We are using the world’s oldest interactive game — conversation...
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How to Conquer the Times Table, Part 5
Photo of Lex times 11, by Dan DeChiaro, via flickr. We are finishing up an experiment in mental math, using the world’s oldest interactive game — conversation — to explore multiplication patterns while...
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How Long is 10! Seconds?
A fun exploration for upper elementary or middle school students, from Numberphile: Get all our new math tips and games: Subscribe in a reader, or get updates by Email.
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Multiplication Challenge
Can you explain why the multiplication method in the following video works? How about your upper-elementary or middle school students — can they explain it to you? Pause the video at 4:30, before he...
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PUFM 1.5 Multiplication, Part 1
Photo by Song_sing via flickr. In this PUFM Series, we are studying Elementary Mathematics for Teachers and applying its lessons to home education. My apologies to those of you who dislike conflict....
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Trouble with Times Tables
[Photo by dsb nola via flickr.] Food for thought: Imagine that you wanted your children to learn the names of all their cousins, aunts and uncles. But you never actually let them meet or play with...
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PUFM 1.5 Multiplication, Part 2
Poster by Maria Droujkova of NaturalMath.com. In this PUFM Series, we are studying Elementary Mathematics for Teachers and applying its lessons to home education. Multiplication is taught and...
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What Do You Notice? What Do You Wonder?
If you want your children to understand and enjoy math, you need to let them play around with beautiful things and encourage them to ask questions. Here is a simple yet beautiful thing I stumbled...
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Multiplying Negative Numbers with Rectangles
I love using rectangles as a model for multiplication. In this video, Mike & son offer a pithy demonstration of WHY a negative number times a negative number has to come out positive: Get all our...
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WOW – Multiplication! An Open Online Course for Parents and Teachers
Once again, the authors of Moebius Noodles are teaming up to offer a free course for families, math clubs, playgroups, and others who want to explore adventurous mathematics with kids of any age. This...
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Things To Do with a Hundred Chart #29
Here’s a new entry for my 20+ Things to Do with a Hundred Chart post: (29) Blank 100 Grid Number Investigations: Challenge your students to deduce the secret behind each pattern of shaded squares....
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Multiplication Models Card Game
[Poster by Maria Droujkova of NaturalMath.com. This game was originally published as part of the Homeschooling with a Profound Understanding of Fundamental Mathematics Series.] Homeschooling parents...
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