One of the standards for mathematical practice in the Common Core is to "construct viable arguments and critique the reasoning of others.” That’s a tall order for students used to sitting quietly in a ...

Research consistently shows that teacher effectiveness and satisfaction with our work increases when we are able to engage in deep and meaningful collaboration. Earlier this month I wrote about one ...

Marna Wolak’s fifth grade students at Sanchez Elementary in San Francisco are gathered on the rug for a “number talk.” Wolak is getting her students thinking about fractions, noticing patterns and ...

Vicki S. Collet agreed to answer a few questions about her book, Collaborative Lesson Study: ReVisioning Teacher Professional Development. Vicki Collet is an associate professor of curriculum and ...