# Questions tagged [units]

The tag has no usage guidance.

4 questions
Filter by
Sorted by
Tagged with
133 views

### How to explain square meters?

How can we explain to students these ideas? A square with 4 sides measuring 25 cm each does not have an area of 1 square meter. A shape which is not a square can have an area of 1 square meter. Is “...
2k views

### What does research indicate about how one should treat units in elementary school?

Background: My friend told me that when she was in elementary school, the teacher would ask questions like "If you have $6$ apples and eat $2$ of them, how many apples do you have left?" A ...
### How to teach that $10000x^2$ c$^2$m$^2$ is wrong?
How do you teach to teenagers or kids that if we have a square with side length $x$ m (that is, $100x$ cm), then its area is $x^2$ m$^2,$ but not $10000x^2$ c$^2$m$^2$ ?
### Should one include the unit in the variable? E.g. should one write $x^\circ = 30^\circ$ or $x = 30^\circ$?
I sometimes come across equations like $x^\circ = 180^\circ - \frac{360^\circ}{n}$ where I would write $x = 180^\circ - \frac{360^\circ}{n}$, or like $3 \text{ cm} + x \text{ cm} = 5 \text{ cm}$ where ...