# Tag Archives: squares

## If One World Trade Center is a prism and not an antiprism, would it be less in volume?

One World Trade Center, more simply known as 1 WTC and previously known as the Freedom Tower, is the lead building of the new World Trade Center complex in Lower Manhattan, New York City. The supertall skyscraper is 104 storey  and is being constructed in the northwest corner of the 16-acre World Trade Center site. The image at the right shows the design as… Read More »

## The Pythagorean Theorem Puzzle

Math puzzles are great activities for enjoying and learning mathematics. The following is an example of Tachiawase. Tachiawase is a popular puzzle in Japan which involve dissecting a geometrical figure into several parts and then recombining them to form another geometrical figure. The puzzle below is credited to Hikodate Nakane (1743). This was one of… Read More »

## What is a coordinates system?

This is the first in the series of posts about teaching mathematics and Geogebra tools at the same time. I’m starting with the most basic of the tools in GeoGebra, the point tool. What would be a better context for this than in learning about the coordinate system. Teacher can use the following introduction about… Read More »

## Assessing understanding via constructing test items

Assessing understanding of mathematics can also be done by asking students to write test items.  Here’s my favorite assessment item. I gave this to a group of teachers. Possible  answers/ questions. Year level: Third year (Year 9) Question 1 – What is the distance of P from the origin? Question 2 – What is the… Read More »