# Category: Number Sense

## Earth Day 2022

We have 16 interesting activities to bring home; air quality, erosion, water levels, climate change, solar power, recycling, and changes to our Earth. Use the moment.

## April 15th happenings

We have 6 April 15th activities. The Boston Marathon, Where your tax money goes, Jackie Robinson, and Paul Revere’s ride.

## Passover, Spring, and Easter ideas (10 activities)

Dyeing eggs; matzoh ball soup; holiday candy sales; when to plant seeds; Peeps; macaroons; Hebrew calendar; Python tree; and giant chocolate bunnies.

## Who has the greatest Men’s March Madness program?

The Kansas Jayhawks just won the finals of this year’s March Madness tournament. Which NCAA teams have had the best basketball programs over the years.  Students decide which stats count towards the “Greatest March Madness Program”.

## How big of a crepe can you make?

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 us?  Is it too big and we will have…

## Mental math tricks – part 2

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? The activity: ImpressYourParents-part2.pdf

## April Fool’s Day fun

Try one of these 4 activities on April Fools Day. Where did that extra dollar go? Mystical Mathematical Mind Reader; perplexing missing square in the triangle; and Robert Kaplinsky’s foil prank.

## Refugees from Ukraine

Civilian Ukrainians are fleeing the war zone in order to remain safe and find food and housing.  How do these numbers compare with other tragic evacuations. While interpreting graphics and working with these huge numbers, bring your student’s opinions and concerns into your math class.

## Spring is here (5 activities)

To celebrate spring, we’ve shown our fractal tree coming to leaf and created in Python to see what students can figure out about the instructions of the computer language. More March Madness activities are included. An Excel activity on counting backwards to figure out planting dates. And, a reminder of tick time and the growth of Lyme disease.

## What is my best gasoline option?

Should I pay the membership fee and get BJ’s gasoline?  Should I just buy the cheaper gas at Sheetze? Students figure out the best deals with a membership fee, a loyalty credit card, or just the cheapest gas around. They create linear equations and find out for which amounts of gas would cost differences be the greatest and at what amount of gas would their costs be the same. And more …

## Picking the perfect bracket 2022

What are your chances of picking every game? How does the change from 64 to 65 to now, 68 teams in the field complicate things?  How many brackets would you need to fill out to pick every possibility?  How many reams of paper would you need to print all of those brackets?  Let’s do the math!   Also, check out the video below that explores your odds of picking all games in the tournament perfectly.

## 3 Saint Patrick’s Day activities

Are finding four-leafed clovers really hard to do? How much dye does it take to turn the Chicago River green? If you were keeping track of your food intake, how much would a Shamrock Shake cost you?

## Daylight Savings Time and Pi Day are coming up!

How does the start of Daylight Savings Time make you feel? – updated! Will you wake up and go to sleep earlier or later on Sunday? What kind of chart or picture could you draw to help you compare before…

## When will WORDLE run out of words?

Have you played WORDLE yet? Why do you suppose that this game is so popular? When will there be no new 5-letter words to try?

## Iditarod 2022 – The Last Great Race on Earth

Students do some rate, distance, and hardship comparisons to decide if they agree that the Iditarod is really the Last Great Race on Earth.