Math Practice At Home: Constructing and Critiquing Arguments
The Common Core State Standards (CCSS) include eight “Mathematical Practices” that teachers and students are encouraged to use throughout their mathematical lives. These are different from the...
"Show your work." Have you ever tried to ask a group of math teachers what this actually looks like? Answers can vary, but in general, even the teachers who say this often have a hard time describing...
"Show your work." A common theme on math worksheets and tests. Yet, despite the frequent refrain, it's actually quite difficult for teachers to describe what good examples of "showing work" actually...
(Click here to read this article in English.) Poco después de aprender los conceptos básicos de la multiplicación, su hijo comenzará a aprender a factorizar en la clase de matemáticas. Puede...
It's tempting to think that squaring a binomial means simply squaring each term. I mean, if math is logical and makes sense, it should be that easy, right? Yet, algebra students (and even students...
I'm seeing multiplication tables like this in more and more schools. Each product is made up of the number of squares it represents. When would you use an area model? What does it represent? An...
