Here’s a mind-blowing experiment that you can try at home: Gather some children’s blocks and place them on a table. Take one block and slowly push it over the table’s edge, inch by inch, until it’s on ...

Corrected: An earlier version of this story misspelled the name of Julie Sarama, a researcher who has developed strategies for building the mathematical skills of preschool students. A pair of New ...

I’m responding to Esther Cepeda’s opinion column “Don’t jinx students by bad-mouthing math class” (April 28, The Columbian). I love math when I can solve a problem by using the right tools from a ...