2023-11-20 09:44:50
Is 2023 a special number?
Is 2023 a special number?
1998 was a Harshad year.
- What do you notice about the number 2023?
- What is a Harshad number?
- Does 2023 meet the criteria?
- Big deal? Rare? Often?
Comments (0)
Display 1 - 10 Of total 0
California wildfire
Wildfires are burning in the Sierra Nevada M...
C and F
This activity begins with explorin...
A Parametric Heart
♥♥♥♥♥♥♥♥
In this updated activity, ...
More eruptions on Hawai'i's Kilauea
The Volcano Kilauea is continuing to spew ...
Shamrock Shake
For Saint Patrick's Day add a little nutrition m...
Ravensburger huge puzzle
This puzzle is gorgeous and HUGE!
Rave...
How fast can you run?
Have you heard of The Six Million Dollar Man? &n...
The HAT tessellation
An Einstein aperiodic tile has just b...
Launch of the next ISS crew
If all goes well, the next crew of the I...
Really old
Tom Lehrer is a singer, songwriter, satirist...