## Caribou Contest Offers FREE Online International Math Contest

Take Advantage of the FREE contest on October 15th, 2014 Looking for new ways to bring mathematics into your schools and classrooms? Consider the Caribou Math Contest. Offered online throughout the year, students can take part in an international math contest up to six (6) times throughout the school year. Best of all, the first contest of the year is FREE for all students from grade 3...

## Visualizing the Maximum Area of a 3-Sided Rectangular Enclosure

Increasing Spatial Reasoning Skills: Optimization of Measurement Although maximizing the area of a 4-sided rectangular enclosure is usually considered quite basic for most students, understanding why maximizing a 3-sided rectangular enclosure does not yield a square can be more difficult. To help address this student learning need, here is the animation created for maximizing the area o...

## Visualizing the Maximum Area of a 4-Sided Rectangular Enclosure

Increasing Spatial Reasoning Skills: Optimization of Measurement In the past, when introducing the concept of Optimization of Measurement, students would complete a series of investigations involving different lengths of rope, fence, etc. and would make connections from the table of values and graph they would produce. While I still intend to do some of the investigations, I want to make...

## Reviving the #ADEchat Twitter Hashtag Bi-Weekly on Tuesdays

First #ADEchat Tuesday September 30th at 5PM PST / 8PM EST I'm honoured to join Lucy Gray (@elemenous) and Carl Hooker (@MrHooker) for the revival of the Apple Distinguished Educator #ADEchat hashtag on Twitter! Every other Tuesday night on Twitter at 8PM EST (5PM PST), #ADEchat will be hosted by Apple Distinguished Educators across the globe to engage with the Global Educational Commu...

## Visualizing the Area of a Trapezoid Formula

Visually Understanding Area of a Trapezoid in Multiple Ways While some students are aware that they could find the area of a trapezoid by treating the shape like a composite figure, I wanted to help students better understand where the formula comes from with a visual aid. Here is the next video animation I created in my Visualizing Mathematics series: Visualizing the Area of a Trapezoid ...

## Visualizing the Volume of a Triangular Prism Formula

Visually Understanding Area of a Triangle and Volume of a Triangular Prism About a week ago, I shared my visual animations explaining the "Derivation of the Volume of a Cylinder Formula" and Volume of a Rectangular Prism formula I used in class and students seemed to be able to tie some of the visuals to the work they completed in class. Here is the next video animation I created in my Vis...

## Pythagorean Theorem Interactive iBook Now Available!

Learn Pythagorean Theorem Through Exploration Last week I officially published my first interactive iBook on iTunes called Learn Pythagorean Theorem Through Exploration. This iBook is FREE to use under a creative commons license and scaffolds students from a 3 Act Math Task all the way to using Pythagorean Theorem to solve the problem. Table of Contents Chapter 1: Taco Cart [...

## How to Use Public Google Spreadsheets for Assessment

Public Google Sheets Keep Teachers, Students and Parents Informed The offerings from Google Docs seem to be pretty basic; word processor, spreadsheets, and presentations all saved in the cloud. Unless you are creative in your thinking and understand all of the added features which make Google Docs revolutionary, you may never see the benefit. One of the great features available is the a...

## Visualizing the Volume of a Rectangular Prism Formula

Visually Understanding Area of a Rectangle and Volume of a Rectangular Prism Yesterday, I showed the "Where Does the Volume of a Cylinder Formula Come From?" video in class and students seemed to be able to tie some of the visuals to the work they completed in class. It inspired me to try another one, this time with the volume of a rectangular prism. Here's the result of my latest exper...

## Visualizing the Volume of a Cylinder Formula

Visually Understanding Area of a Circle and Volume of a Cylinder Over the past year, I have been on a mission to try and make some of the formulas we use in the intermediate math courses in Ontario (Middle School for our friends in the U.S.). I think it can be difficult for math teachers to explain where formulas come from because we often think of deriving formulas algebraically. Unfortu...

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