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Total solar eclipse - apparent sizes
Algebra Geometry Science Current events Ratio and Proportion
  Where will the eclipse be seen?  What if you are not in the path of totality?  Total solar eclipse?  What is apparent size?  How can the moon seem to cover the sun comp...
6.RP.3 7.RP.2 7.G.1 trigonometry 7.G MP2 MP3 HS HSG HSG-SRT.C.8 HSF 7.RP.A HSG.SRT.D.11 total eclipse annular eclipse angular diameter apparent diameter HSG.SRT.C.6 geometry Solar geometry distance

Giant iceberg
Number Sense Geometry Science Ratio and Proportion Probability and Statistics
    Ferryland, Newfoundland. JODY MARTIN / REUTERS  This giant iceberg drifted past Ferryland, Newfoundland in 2017.  It's hard to tell how large it actually is, but...
Volume 6.RP.3 7.G.1 5.MD 6.G 7.G 6th 7th 8th HS 5th 5.MD.5 HSG-MG.A.1 MP5 6.G.2 climate change 7.G.5 estimation Earth day

Alarming ice cracks on Brunt Ice Sheet in Antarctica
Algebra Number Sense Geometry Science
    A new, fast-growing ice crack is forcing the Halley VI British research station in Antarctica (shown above) to be moved.  Fear of a huge break-off from the ice sheet ...
Data and Probability ratio area rate global warming 6th 7th 8th HS 7.G.B 6.G.A 7.G.A climate change HSG/GPE.B.7 HSA/CED.A.2 HSG/SRT.A.1 HSN/Q.A.1 scale drawing scale winter

How did I graph this heart?
Algebra Geometry Holidays Art
  In this activity, students will use mathematical equations to create a heart shape on a coordinate plane. This activity encourages students to apply their algebra and graphing skills creat...
8.EE 8.F 8th HS HSG HSA equations graphing circles graphing lines heart valentine circle Valentine's Day

Civil rights marches, how do you count a crowd?
Number Sense Geometry Social Studies Holidays
  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 histo...
Data and Probability estimation reasoning Martin Luther King Jr. Civil Rights MLK MP.4 6th 7th 8th HS 5th 4th 7.G.B 6.G.A 7.RP.A HSM 4.MD.A HSG.MG.A.2 Million Man March crowd counting

What's my angle?
Geometry Science
 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 Sun?If so, at what angle should I use?Should I be able ...
latitude MP2 Earth day 8th HS 7.G.B HSG.SRT Solar panel angles Solar geometry 8.EE.B HSG.CO HS.TF HS.C climate change trigonometry

Rescue of the Chilean miners - The 33
Geometry Science
On August 5, 2010, the San Jose copper-gold mine near Copiapó, Chile collapsed stranding 33 miners in a large cavern more than 2,000 feet below ground. A new movie has just been released about the inc...
Volume cylinder 8.G.9 surface area 7th 8th HS HSG-MG.A.1 HSG.MG.A.2 geometry

How much have doughnuts changed?
Algebra Number Sense Geometry Food
Part of the Smithsonian's Sally L. Steinberg Collection of Doughnut Ephemera -- Click on the image to see it larger. When you are working on volume in your class, you can use this activi...
Volume 8th HS HSG-MG.A.1 HSA.SSE.B.3 HSA.SSE.A.1 HSA.SSE.A.2 Torus donuts 8.G.C.9 HSA.APR.D.6 HSG.GMD.B.4

The Blue Marble
Geometry Science Holidays
  April 22nd is Earth Day. Use this activity to demonstrate the various mappings of our 3-d Earth to a 2-d piece of paper. Students compare maps with this famous photo and check to see which...
geometry 6.G 7.G comparisons nets mapping 3-d representations Earth day 6th 7th 8th HS HSG-GMD.B HSG-MG.A

HDTV Surprise!
Number Sense Geometry
  How were your holidays?  Your school vacation?  Mine was good. I surprised my family with this HDTV, which I wrapped and hung on our wall.  The size of an HDTV is determined by ...
proportion ratio Pythagorean Theorem scale 7.G.1 HDTV 7.RP.3 8.G.7 7th 8th HS HSG-SRT.C.8

Crop circles
Algebra Geometry Art
  In the travel section of our newspaper this week, Wiltshire, England was a recommended destination to see Stonehendge and crop circles  ...........  crop circles? Many of the ...
art 7.G 8.G 6th 7th 8th 5th compass circles HSG

Is this possible?
Algebra Number Sense Geometry Food
Brian Shoemaker, a Newton, MA mathematics teacher, saw this Dunkin Donuts Mazda traveling down the road.   He wondered if that size coffee cup could really have coffee in it. &nbs...
ratio estimation Volume cone cylinder 8.G.9 coffee HSG-MG.1 7th 8th HS HSG.GMD.3 Frustum
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