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How much should you spend on this sale?

Algebra Number Sense Ratio and Proportion 3-act tasks Data and probability

This activity can be used in a large range of grade levels. Your class can work on percents, linear equations or piecewise functions. Act One: We missed the semi-annual sale but we want to get ready...

Kilauea's lava flow

Number Sense Geometry Math and Science

[caption id="attachment_15749" align="aligncenter" width="500"] Halema‘uma‘u Lights the Morning Sky - Photo taken from the overlook by the Volcano House on January 30, 2014 - NPS photo[/caption] Th...

Ebola updated

Algebra Number Sense Math and Science Math and Social Studies Data and probability

Ebola has continued to gain strength and devastate regions of West Africa. WHO (World Health Organization) updates their data frequently and the progress and lack of control of...

Cost of light bulbs - updated!

Algebra Number Sense Math and Science Math and Social Studies Ratio and Proportion Data and probability

There's a lot of misinformation out there about the cost to consumers of CFL and LED bulbs and the savings in energy and money that could be realized. Let your students "do the math" and realiz...

My teacher says this stream is parabolic. Is he correct?

Algebra Number Sense Geometry Math and Science

Instead of asking students to just believe what you've said, why not ask them to verify your assertions? Students plot the points of the stream, perhaps map them with an equation generated b...

The Fiscal Cliff - sounds scary

Number Sense Math and Social Studies

We've used a graphic to help students understand what is meant by the Fiscal Cliff. Students will understand some of the terms and study the consequences of two upcoming scenarios. The...

It sure is cold out ... or is it?

Algebra Number Sense Math and Science Data and probability

Students ponder the relationship between place latitudes and average January temperatures while they try to discover a correlation. Is this a linear or near linear relationship? … averaging, mis...

Rapunzel

Number Sense Ratio and Proportion

Disney's animated movie, Tangled, came out in 2010. We've shown students some of the Brothers Grimm's original fairy tale along with giving them a glimpse at the physics involved in the animation of R...

Geometry of Flooding