Number Sense

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It's almost summer now

Algebra Number Sense Geometry Math and Science Math and Food Ratio and Proportion Data and probability Funny
How much water do you have to drink?   In this activity student develop formulas for calculating their water needs, learn abo...

Is 2024 a special number?

Algebra Number Sense Current events Any time math
Image by dashu83 on Freepik Students are introduced to some esoteric number categories as they check out the various descriptors of this year's date.  What's a Harshad number?  What's a...

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...

Will I have enough stuff?

Algebra Number Sense Math and Food Current events Ratio and Proportion Wow factor
Thursday, Aug 10th, is National S'mores Day! In my pantry I have one new box of Graham crackers, one bag of 6 full-sized Hershey bars, and one bag of marshmallows. Friends are meeting me at the b...

Women's World Cup - How many matches are left?

Number Sense Geometry Sports Current events
The first round of Group play has finished and now the remaining teams start the second round of play. The teams have already played a lot of matches. How many? And, how many matches are left? ...

Memorial Day 2023

Algebra Number Sense Math and Social Studies Current events Ratio and Proportion
   This Monday, Americans will celebrate Memorial Day.  Who are we honoring?  How did the holiday come about?  Isn't Memorial Day usually on May 30th? Students...

Time to make your prom clothes ... with Duck Tape

Number Sense Math and Social Studies Math and Art Wow factor
Larissa Leon, from Texas, in her gorgeous Duck Tape prom gown. If you are going to make your prom clothes then you should start soon ... and buy your Duck Tape. Crafty teens can make their ...

Is 2023 a special number?

Algebra Number Sense Current events
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?  

Wind chill

Algebra Number Sense Math and Science Ratio and Proportion
  The weather forecasters tell us what the wind chill temperature will feel like. How do they figure out that number? In this activity students use the National Weather System chart ...

The Algebra of Magic Squares

Algebra Number Sense
Have you seen magic squares before? How could a teacher use these puzzles to help students with different number skills? How few blank cells could you leave? Are there any special cel...
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