Teaching and Learning
The Red Box Challenge
Here is another hundreds chart that I created in PowerPoint. This is the Light Switch Hundreds Chart. Can you explain why it arrives at the final set of numbers? Try to think outside of the “box.” You’ll understand what I mean in just a moment… Update: This challenge has been solved one time now.…
Read MoreThe Animated Multiplication Table
I made multiplication table using PowerPoint and went on to discover some very interesting relationships within the table. You will see several here. Watch the video below. Click here to download the animated Multiplication Table. (After downloading, your first step will be to click the multiplication symbol to clear the table.) Click…
Read MoreLetting Noticing Lead to Wondering
This post is simply my moving squares around using PowerPoint and letting it lead me to wonder about mathematical concepts. You should watch it and see if it makes you wonder, too.
Read MoreWhy We Must Wrestle With Content
I was awake at 5:30 this morning. Maybe you were, too. For me, it was because of a math lesson that was coming up in a few hours: subtracting negative integers from negative integers. I wasn’t satisfied. In fact, I was troubled. It was bothering me so much that it had awoken me in the…
Read MoreLosing the Mustard Bottle
The mustard bottle was only inches away. It stood on the rolling cart next to the overhead projector. The nearly blinding light from the projector shone through the transparency and was then reflected up onto the screen behind me, the screen that the students were watching intently. My hand was smeared with blue vis-à-vis ink,…
Read MoreFinding Bedrock
Education moves and changes quickly. It’s changing right now. We all feel it – and we should, because we care so much about it. The list of changes is long, and the opinions surrounding those changes is even longer. When we are the drivers of change it is new, exciting, and illuminated with possibility. But…
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