# Tag: 5.MD

## At least the days are getting longer

What’s your guess?  How fast are the number of daylight hours changing each day?  Are the changes dramatic or subtle? Students make guesses; compute how long, on average, the change in daylight hours should be; and finally understand the variability in our year of daylight hours.

## Lots of Cranberries

In this timely activity, students learn about how cranberries are grown and harvested; estimate their size and quantities; and see what they can deduce from published statistics.

## USPS needs help!

Students learn how the Postal Service is funded and try to decide how the USPS could earn more or spend less in their operation.  They finally get to think about whether the post office should be a government run service or a self-sustaining business.

## How big is this hornet really?

Giant hornets have now migrated to North America. In this activity students take the hornet’s measurements in millimeters and try to draw the hornet, life-sized, on centimeter graph paper. They learn a little more about the new beast.

## It might be a good year to see the Perseid meteor shower

Catching a productive meteor shower can be a stunning experience.  On the evenings and mornings of August 11th, 12th and 13th there could be a very good show.  A last quarter moon will leave the night sky growing darker each…

## A socially-distanced party

I risked infecting my friends or becoming infected myself by throwing a very small socially-distanced party.  I served baked appetizers, disinfectant wipes, and latex gloves.  I cooked while wearing clean latex gloves and served the appetizers with a spatula.  The…

## May 27th launch from the U.S. again

NASA and SpaceX plan to launch humans from Kennedy Space Center, Florida, to the International Space Station for the first time since July 11, 2011. This is a more current events activity than mathematical.

## Microns and Masks

How big is a coronavirus cell? How big is a micron? How well do these masks protect against the virus? What can you observe about the size of particles mentioned? Why are we wearing masks?

## K-Pop and BTS, how much can they earn from Youtube and Spotify?

How much could this K-pop group possibly earn on Youtube and Spotify? Unit ratio calculations. BTS

## Louisiana

We recently watched the approach of Hurricane Barry and worried about the fate of Louisiana. After the devastation of Hurricane Katrina, what would another powerful hurricane do to this fragile state? What is it about Louisiana that causes so much…

## Giant iceberg

Over the past Easter weekend this giant iceberg drifted passed Ferryland, Newfoundland.  Its hard to tell how large it actually is but it looks huge.  Use some of the data that was supplied and your estimation skills to gauge the…

## Shrinking Toblerone

They changed it.  That is so not fair … or is it? You can check out a video news story on the delicious shrinking Toblerone bar here. Two sizes of Toblerone bars are now configured differently.  How much did they…

## 10 Million nematodes

Grubs are killing my grass.  I don’t want to put poison into the ground.  What can I do? There are tiny roundworms called beneficial nematodes. They can kill destructive soil pests in your garden and lawn.  They are tiny worms that…

## The Boston Marathon

Monday, April 15, 2019 Patriot’s Day, is the next running of the Boston Marathon. What do you know about marathons? What do you know about the Boston Marathon? How long do you think the marathon is? Make your best guess.…

## Timelines for the life and work of Martin Luther King

Monday will be the holiday celebrating the life and work of Martin Luther King, Jr.  Help students learn about his work towards racial equality as they create one or two time lines. One time line is about the events and…