## Challenges for April Fools Day

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

For members we have solutions. PerplexingProblem-solution.pdf

CCSS: MP1, MP3, 4.OA, 5.G, 8.EE, 8.SP

Or baffle 'em with this Mystical Mathematical Mind Reader activity.  They will think you are pulling one over on them until they figure out the math!

CCSS:  4.OA.4, 5.OA.1, HSA.CED.A.2, MP1, MP3, MP4, MP7, MP8

## What is an atmospheric river (AR)?

North America from space. Elements furnished by NASA - https://www.noaa.gov/stories/what-are-atmospheric-rivers

How are they ranked? Students become familiar with this weather phenomena and learn how the different ARs are measured. To more fully understand their power, students compare the strength of an AR to the momentum of a Mack truck. They need to convert meters/second to miles/hour. How strong are ARs really? Are they all dangerous?

The activity: AtmosphericRiver.pdf

## How hard it is to pick the perfect bracket?

### March Madness Men's and Women's Brackets

 Clicking on this image will show it larger in a new window. Clicking on this image will show it larger in a new window.
Games have begun and there have been several upsets but March Madness won't be over until the finals on April 3rd and 4th. March Madness bracket predictions can still be reworked.

This year there will are 68 men's and 64 women's college basketball teams in the tournaments.

If you try to predict how the games will play out by filling out a bracket, 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?

## March Equinox – big deal? … and 5 more Spring activities

Brand new!

What's with the March Equinox? Does it really affect our lives? Is it just some astronomical occurrence? Students calculate the daylight hours at the March Equinox by time between longest and shortest days. They examine the progression of those daylight hour changes and look for a pattern.

The activity: SpringEquinoxDayLength.pdf

## March Madness – Does seeding really matter?

Always updated!
March Madness, the big 68 team college basketball tournament, will now take over our TV viewing during the weekends of March. School and office friends are filling out brackets.  Engage your students in percents as they get excited about March Madness. Is getting a higher seed really an advantage?  Use 30 years of data to help determine for which seeds it makes sense to pick an upset.  Finally, students determine a general strategy for picking games in the first round.

## How hard is it to find a 4 leaf clover? (3 Saint Patrick’s Day activities)

Shamrocks in Ireland are actually 3-leafed white clover, trifolium repens. If you are lucky, you can sometimes find a four-leafed clover.  How rare is finding a 4-leafed clover?  How hard do you have to look?  What size area of clover must you examine to find one?

The activity:   4-leafedClover.pdf