## 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...

## FREE Pythagorean Theorem Interactive iBook Now Available! #maths #mathchat

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...

## Where Does The Volume of a Cylinder Formula Come From?

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...

## The Best Free LMS for iPad Classrooms

Is there a "best" FREE learning management system for iPad classrooms? August is typically the month when I begin looking ahead to another school year that begins in September for Ontario students. Classroom procedures, assessment practices, reorganizing the order of curriculum and implementing new technology tools are common items on my brainstorming list. With Google Classroom being launche...

## Ineffective Uses of Technology: Using Tech “Just Because”

While in Austin, Texas for iPadpalooza, Tim Yenca (@mryenca) was kind enough to give me a lift to dinner with a group of presenters. After finding a spot in a parking lot, I was excited to see how forward thinking this lot owner was with their payment system. Although more and more mobile businesses such as food trucks and open-air yoga instructors are receiving payments on their smartphones...

## Students as Creators – Not Curators – of Math

Most of my colleagues both on- and offline know me for being a math geek because I'm a math teacher and very passionate about improving how we teach the subject to our students. I'm definitely not the most educated, but rather just a guy who faked much of his K-12 education with the title "good in math." As I've mentioned in previous posts, I memorized much of the math (and other subjects) wit...