The new R-naught number
There's a number used to quantify how fast a virus will spread, the R-naught number. As the coronavirus spread though out the world, we saw how the threat of infection was measured and und...
Math and Science
Genres
Grade
At least the days are getting longer
Algebra
Number Sense
Math and Science
Holidays and Annual Events
Current events
Ratio and Proportion
Data and probability
What's your guess? How fast are the number of daylight hours changing each day? Are the changes dramatic or subtle?
Students make guesses; compute how l...
December 21, 2020 - Great conjunction
Right now, just after sunset, in the southwest sky, you can check out the planets of Jupiter and Saturn as they get closer and closer to each other. They are millions of miles apart but they app...
How much water should you be drinking?
As we are outdoors more and temperatures are rising, it might be a good time to look at hydration.
A healthy requirement for fluids can't really be the same for everyone. Surely the amount ...
More eruptions on Hawai'i's Kilauea
The Volcano Kilauea is continuing to spew molten lava and ash on the island of Hawai'i. This volcano is on the tip of the southern most Hawaiian Island. Is that significant?
In this activit...
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...
Saving Water Bottles
In my grocery store they now have these new water bottle refilling stations. You can simply refill your own container with water instead of buying a six-pack of bottled water....
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...
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 water. Can you help me?
For...
Kilauea's lava flow
[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...