Every secondary teacher and secondary textbook author knows that parabolas are #realworld because they describe the path of projectiles subject to gravity.
“Projectiles” are not #realworld. “Baseballs” are #realworld.
But let’s not relax simply because we’ve drawn a line between the math inside the classroom and the student’s world outside the classroom. Three different textbooks will treat that application three different ways. Here are three of them, in fact.
Tell us: who wore it best?
- In what ways are they different?
- What do their differences say about their authors’ beliefs about students, learning, and math?
- Would you make changes? Which and why?
Click each image for a larger version.