Mathematical Association of America. Calculation Nation® - Challenge others. Challenge yourself.® The eyeballing game. Welcome to Math Playground. Welcome to Math Playground. Math with Bad Drawings | Math, teaching, copious metaphors, and drawings that will never ever earn a spot on the fridge. Bedtime Math Home » Bedtime Math. ANCIENT GREEK GEOMETRY. Tag: mathmonday. Mathematics Encyclopedia: Lesson Plans, Class Activities, Background Information. New Math Game: Factor Dominoes! Lately I've been looking for different ways for my seven year old and I to conceptualize multiplication. As has happened many times before on our math journey, this graphic showed up at just the right time (albeit somewhat circuitously through the excellent influence of the Math Munch blog). My favorite thing about it is that it's not about numerals; when I look at factoring trees I can make some surface sense of them, but my mind goes numb pretty quickly.
In this visualization, however, there is an incredible connection to shapes and grouping. I find this visual especially well-suited for kids in general and at least this adult specifically. Last night I printed out the graphic and left it advantageously on the kitchen counter. She wondered what it was about so we looked it over together. It's the geometry of the design that really shows the relationships between numbers. All our talking and looking got my mind spinning. I'm not sure I got it the way I wanted it, but no worries. Bedtime Math | A fun new math problem every night. Manifesto. Interactive Mathematics Miscellany and Puzzles.
Kids Math Games Online - Free Interactive Learning Activities, Fun Educational Resources. Algebra: Themes, Tools, Concepts - Henri Picciotto. MathRelax. Tri-Hexa-Flexagon « After Math 7. The flexagon is an entertaining paper toy that has some educational value. 1. What kind of triangles? Equilateral 2. 3. 4. The pattern and instructions I’ve attached worked well with students.
Some students will need help the first time they fold and open the flexagon. After doing the fold/open/flatten operation, rotate the flexagon one triangle and then you are ready for the next fold/open/flatten operation. For the first few times, it helps to go back over the folds after flattening. There are many websites, but this is a good one for starters. This Hexahexaflexagon Tour video shows how to operate a flexagon. Template: Instructions: 0_flexagon Like this: Like Loading... Math Delights - Coins in Twoland. By Joshua Zucker, joshua.zucker at stanfordalumni dot org In Twoland, the only coins are the toonies: 1, 2, 4, 8, 16, 32, 64, 128, and so on. The law says you must always pay with exact change; only the banks are allowed to make change.
In Twoville you must pay with zero, one, or two of each type of coin, never more than two. (If Twoville is too complicated for you, try Oneville where you can only pay with zero or one of each coin!) For instance, to pay 6 toonies, you could pay with: one 4 and one 2 (and zero 1s) one 4, zero 2s, and two 1s or two 2s and two 1s. You could describe the three legal ways to pay by writing them in English, as I just did. Another, shorter way to write the list of legal ways to pay might be like this: 110102 022 (or simply 22).
Create a table with the list of ways to legally pay for items that cost 1 toonie, 2 tonnies, ..., 16 toonies in Twoville, remembering that you cannot use more than two of each coin. What about the amounts that are exactly one single coin?