I gave a talk at the NCTM Institute on Reasoning and Sense-Making. The topic was "Making Sense in Algebra 2." It was an updated version of an old talk titled "Seeking Depth in Algebra 2". For the occasion, I updated the Algebra 2 page on my site. In particular, I posted the new version of… Continue reading Sense-Making and Algebra 2
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In my other life…
My Web site was mentioned in this news article.--Henri
Grades (part 2)
When students learn their grade for a given course, what they are learning is how they compare with their peers, which is one indicator of "how they are doing". (See Grades, part 1). Grade or no grade, many students know exactly where they fit in the classroom hierarchy, though some may not admit it to… Continue reading Grades (part 2)
Grades (part 1)
Grades have no intrinsic, absolute meaning. An A at an elite private school does not mean the same thing as an A at a public school that serves a poor neighborhood. An A at my own school today does not mean the same thing as an A meant 20 years ago. An A in Science… Continue reading Grades (part 1)
Manipulatives: Short Video
I added a short video of me explaining the basic idea behind manipulatives. Check it out.--Henri
My Summer Plans
Where you can find me this summer:June 20-22: Independent Curriculum Group conference, San FranciscoBuilding an Innovative Curriculum: Strategies for Teachers, Departments, and Schools (Scroll down until you see this text)I'll participate, and perhaps present something on teacher collaboration. June 22-24: Center for Innovative Teaching, San FranciscoIntegrated Technology Symposium 2011 for School Leaders: Digital Tools & Practices… Continue reading My Summer Plans
Algebra Lab: Middle School
Normally, you should be able to get the Algebra Lab: Middle School binder here.If that doesn't work, get in touch with me and I'll find a way to get it to you.--Henri
"Add till it’s plaid"
I’ve expanded this post into two lessons, and shared them on my website, along with videos and GeoGebra files. Check it out! -- Henri --------------------------------------------------------------------- If you have a way to graph ax+by=c electronically, here is a fun way to teach solving systems of equations by linear combination.Say you want to solveGraph the two equations:The… Continue reading "Add till it’s plaid"
Presentation Saturday
I'll be presenting a six-minute talk on "Kindergarten manipulatives in high school" after the main-stage TEDxSF event simulcast this Saturday, April 9, at the Urban School of San Francisco.There may still be some tickets available. Click here for more info.--Henri
Online Presentation
My online presentation about Escape from the Textbook! was recorded. You can be watch / listen to it by going tohttp://mathfuture.wikispaces.com/EscapeFromTheTextbookIn addition to introducing the Escape! concept and community, I gave as an example my approach to teaching arithmetic and geometric sequences (starting with iterating linear functions,) and series (emphasizing algorithms over formulas.) You can… Continue reading Online Presentation
