Activities about counting

Sol LeWitt's pyramid - How might you count those blocks?

Sol LeWitt, Four Sided Pyramid, 1999, Hirshhorn Museum Sculpture Garden, Washington DC Sol LeWitt (1928 - 2007) was a an American artist involved in Conceptual art and Minimalism....

Algebra Number Sense Grades 5–HS

Civil rights marches, how do you count a crowd?

On October 16, 1995, perhaps a million black men gathered for the Million Man March on Washington. This was 32 years after Martin Luther King, Jr. gave his...

Number Sense Geometry Grades 4–HS

Figuring planting dates

It's time to get ready to plant my garden again. But here in Boston we have to start our seeds indoors to give them a head start before...

Algebra Number Sense Grades 8–HS