Perimeter, Area, and Volume

What are the three dimensions when you watch a 3-D movie? Have you ever thought about it? We say a movie is 3-D when it seems to have length, width, and depth. It is almost as if you could touch the scenes.
In class, we've read the book Perimeter, Area, and Volume - A Monster Book of Dimensions by David A. Adler and discussed some dimensions.

Each one of us has three dimensions, we are not flat.

We also discussed the use of measurement units when we talk about perimeter and area. We saw that when we measure the perimeter, we use metric or US standard units like: cm, m, km, in, ft, yd... And, when we measure area we use square units of measurement like: cm², ft², m², in²...

Hope you've enjoyed our measurement classes. We'll start a new topic soon.

See you ;) Ms. Sarah Giansante

Metric vs US customary measurement units

   For the past few weeks we've been studying the US customary measure units. Now it's time to compare these units to the Metric System we use in Brazil.

      The Metric System, also known as International System, is based on a decimal system of measurement using multiples of ten.

Units of length

Here's a chart comparing the metric units and the US customary units:

 

 

Units of liquid volume

 

 

     Now, compare the metric units and the US customary units:

 

 

Units of weight

 

       And what about the units to measure weight?