Number Sense

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How old are you?

Algebra Number Sense Ratio and Proportion Wow factor
We usually give our ages in years, but that isn't very precise is it?  In this activity students find their age in days, hours and minutes.  First students take two minutes to estimate the...

The odds of horse race betting

Algebra Number Sense Sports Current events Ratio and Proportion Data and probability
Rich Strike surprised everyone at the Kentucky Derby horse race in early May by moving from 18th place at the half-way mark (out of 20 horses) to winning the race. Churchill Downs, the track in...

Happy Friday the 13th!

Algebra Number Sense Current events Funny
Don't worry, 13 is a Happy number! Students learn a new function and test whether a number is Happy or Sad.

What time should I wake up?

Number Sense Math and Food Holidays and Annual Events
I'm going to surprise my mom with breakfast in bed for Mother's Day. She wakes up pretty early. When do I have to wake up to pull this off?

How big of a crepe can you make?

Algebra Number Sense Geometry Math and Food Ratio and Proportion
At Costco you can buy this huge tub of nutella.  It contains nearly 7 pounds of chocolaty-hazelnut spread. We use nutella to make banana/nutella crepes.  How long will that tub last u...

Mental math tricks - part 2

Algebra Number Sense Ratio and Proportion Wow factor
36 x 25 = 900     480 x 25 =12,000    924 x 2.5 = 2,310 Can you see any tricks for doing these calculations in your head? An editable Word docx, solutions/hints, and a PowerPoi...

April Fool's Day fun

Algebra Number Sense Geometry Holidays and Annual Events Funny
This day is known for pranks and puzzles.   Try one of these 4 activities on April Fools Day. Ask students to analyze where I made my mistake.  PerplexingProblem.pdf CC...

When will WORDLE run out of words?

Number Sense Current events Data and probability
  Have you played it yet? If so, do you play it every day? Why do you suppose that this game is so popular? When will there be no new 5-letter words to try?

Mardi Gras, 2023

Algebra Number Sense Holidays and Annual Events Ratio and Proportion
Updated for 2023! Tuesday, February 21, 2023, will be the day before Ash Wednesday and the start of the season of Lent.  Mardi Gras is a last hoorah and is celebrated throughout the world ...

February 22, 2022

Algebra Number Sense Current events
Why do you suppose we are posting this date as a topic for YummyMath? What do you think is so special about this date? Does this happen often?  When might a similar day occur?
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