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Heating with wood - What's a cord?

Algebra Number Sense Geometry Ratio and Proportion Any time math
Do you know what a cord of wood looks like? What size stack is that? What's a thrown stack? What's the dog's name that is standing in front of the wood? How long can I heat my house with that much fue...

Nobel Prizes

Algebra Number Sense Math and Science Math and Social Studies Holidays and Annual Events
The Nobel Prizes have just been awarded. This is the medal that is given to the winners. What do you know about the Nobel Prize?  Who do you know who has received one? Alfred Nobel was a ...

More Population Pyramids

Algebra Number Sense Math and Social Studies Ratio and Proportion Data and probability Any time math
The population pyramid above shows the distribution of the World by ages and sex for each continent. How can that information help you put your vision of the world in better perspective? &nb...

Indigenous Peoples or Columbus Day

Algebra Geometry Math and Social Studies Holidays and Annual Events
When Columbus landed in Guanahani (renamed San Salvador, Bahama Islands by Columbus), he began the European settlement of the New World. Guanahani was inhabited by the  Taíno people and...

Will this be an El Niño winter?

Number Sense Math and Science Math and Social Studies Holidays and Annual Events Current events
The Oceanic Niño Index (ONI) started to show changes to the Pacific Ocean surface temperatures in April and May of this year.  Those temperatures are still rising which is a marker for the upco...

Huge Alaskan Vegetables

Algebra Number Sense Math and Science Math and Food Current events Wow factor Any time math
The annual Alaskan State Fair has just been completed. As usual, there were some amazingly big vegetables that won the agriculture prizes. Evidently, even though the growing season in Alaska is s...

Lego Fireman +

Number Sense Geometry Math and Science Math and Art Any time math
At the Toys R Us store, we saw an amazing LEGO creation.  He was a life-sized LEGO fireman with a walkie-talkie, an oxygen tank and even an oxygen...

U. S. Open Tennis Tournament prizes have been awarded

Algebra Number Sense Sports Data and probability
The U.S. Open Tennis Tournament has just been completed. It is possibly the biggest tennis tournament in the world. We've updated our numbers and focused on the prize money.  As students ponder t...

Autumnal Equinox 2023

Algebra Geometry Math and Science
Updated for 2023! Saturday, September 23, 2023 at 06:50 UTC (2:50 am EST), will be the Autumnal Equinox. It is the time of year when an imaginary plane would pass through both the Earth...

The Moroccan Earthquake and the Richter scale

Algebra Number Sense Math and Science Current events Ratio and Proportion Any time math
Friday evening, September 8th, a powerful 6.8 magnitude earthquake hit Morocco southwest of Marrakech. What does a 6.8 magnitude earthquake mean?  How powerful was that...
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