Watch the video:
What do you notice?
What do you wonder?
How many cubes would you estimate would cover the paper?
What is a number that you're sure is too small?
What is a number that you're sure is too big?
What are the measurements of that paper?
It's called A4 paper. The cubes are 1 cm wide.
Its length and width measured with Cuisenaire rods. The orange is 10 cm long.
Now you can work out how many little white cubes would cover the paper.
Here it is measured with rods:
You can see the paper cannot be measured exactly by Cuisenaire rods. The paper and the rods and hundreds don't fit exactly; the paper is a tiny bit less long than we've measured:
Can you work out the exact area of the paper?