Total solar eclipse - apparent sizes
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 complete...
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Giant iceberg breaks off from Antarctica
The crack in Antarctica's Larson C ice shelf has been growing for years. Has the speed of the rift's growth stayed about the same? increased? decreased? Do the math and discuss the...
Proposed southern border wall
You have probably heard about the proposed border wall that may go up along the U.S./Mexico border. How much wall needs to be built? How much will that cost? What is that per mile? Per foo...
Measuring sea level
What does this gizmo do?
We've given students a diagram of what the interior of this mechanism contains and asked them to try to decide what its purpose must be.
Then we've...
April's calf was born!
At about 10:00 am, April 15th, April's calf was born. Everyone will be talking about it and smiling constantly.
Here's some fun math stuff to bring with you for Holiday gatherings.
Patriots' Day
In Massachusetts, Monday April 15th, 2019, will be a holiday from school and work. We celebrate Patriots' Day on the 3rd Monday in April to commemorate the beginning of the Revolutionary War a...
New baby giraffe
Willow at Baltimore, MD Zoo
Willow weighed 125 pounds at birth and was 6 feet 1 inch tall. She will grow to her adult height of around 14 feet tall in only four years! How big wou...
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 histo...
It's latke time
In Leslie's family it is traditional to eat latkes (Yiddish for little potato pancakes) at this time of year. They are fried in a lot of oil and salted generously. Her mom's latk...
$10,000 a week or $10 million all at once?
This activity is accessible to student elementary through high school with varying depth of study.
Would you rather have $10,000 a week or $10 million all at once?
What kinds of things do we nee...