Activities about change

Are these really 70% off?

We ran into this sale online. Is that advertisement correct? Do they just want us to believe their math and not question what is really 70% off? Is...

Algebra Number Sense Grade 7

Pottytalk

I'm trying to be more savy about wasting our resources. I have really old fashioned toilets and I'm trying to figure out if I should invest in saving...

Algebra Number Sense Grades 8–HS

What's my angle?

I'm going to help save the planet by adding solar panels to my roof! Should I tilt the panels on my roof to more accurately aim towards the...

Geometry Math and Science Grades 8–HS

Methane math

Updated! Carbon dioxide and methane are our two most prevalent human-contributed greenhouse gases. This holstein cow is one of many huge contributors to our methane production. Let students...

Algebra Number Sense Grades 6–HS

Fast Growing Plant

This activity/post is a little different than our usual posts. We look at a particular math concept and consider how to use context, models and CCSS math practices...

Algebra Number Sense Grades 8–HS

Occupy Wall Street protest is growing

The Occupy Wall Street (OWS) movement has grown since it began on September 17th. Students can look at charts that show percent mentions of the demonstrations and calculate...

Number Sense Math and Social Studies Grades 6–8