Tag: rate

Population Clock

Click here to see the Population Clock bigger in a new window. How in the world does this clock conclude that there is a net gain in the United States of one person every 14 seconds?

Uh oh! Am I going to run out of data?

Let your students consider the graphic first individually and then in groups of your choosing before handing out the activity sheet. This might be an excellent beginnng-of-the-year, get-to-know-each-other task!  The activity: DataRemaining.pdf CCSS: 6.RP.A, 7.RP.A, MP4

April’s calf was born!

At about 10:00 am, April 15th, April’s calf was born.  Everyone will be talking about it and smiling constantly. Here’s some fun math stuff to bring with you for Holiday gatherings. The activity:  April’s-calf.pdf

New baby giraffe

Willow weighed 125 pounds at birth and was 6 feet 1 inch tall.  She will grow to her adult height of around 14 feet tall in only four years! How big would you be if you grew at her rate…

Which is most expensive?

Who knew that creams for your face could be so expensive!  I’m going to have to rethink what to buy for my mom.  Which of these high priced cremes is most expensive? In this activity students observe some prices of…

The Boston Marathon

Monday, April 17, 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. How…

How Many Pennies did Otha Save?

Otha Anders used picking up pennies as a way to remember to pray.  In this 3-act activity we try to estimate how much he actually collected and stored in 5 gallon water jugs.  Kick off the activity with the article with…

Going bananas

What additional information would you like to know? Record your data from your investigation … either from your own research or from what your teacher can supply. Use all the information that you have gathered to determine which banana deal is…

Fall hiking and the Appalachian Trail

The Appalachian Trail is one long hiking trail that begins in Georgia and ends on Mount Katadin, Maine. Fall is a beautiful time to be outdoors or on the Trail.  This activity is about calculating the needs and rates involved…

New Horizons spacecraft observes Pluto

The New Horizon space probe was launched from Cape Canaveral on January 19, 2006. It has now come close to Pluto and has sent its first close-up images back to Earth.              

Kilauea’s lava flow

The volcano, Kilauea, on the Big Island of Hawaii, has been active and erupting since 2008.  There are two lava flows at present and one is now approaching homes on the Big Island. This is another example of natural events…

MAVEN arrives at Mars

Recently the MAVEN spacecraft (Mars Atmosphere and Volatile Evolution Mission) that was launched on November  18, 2013 reached Mars and attained an elongated orbit around the planet.  How does someone figure out how to do that?

Jackie Robinson

The movie “42” is the story of Jackie Robinson, a baseball player who became the first African-American to play in Major League Baseball since the game was segregated in the 1890’s. Robinson broke the baseball color barrier when the Brooklyn Dodgers started him in April, 1947.  He contributed to…

Snow Days

Here are some pictures from a recent snowfall at my house.  How Much Snow Did I Get?  Have students make an estimate.  Ask them for a guess that is probably a little too low and one that is probably too…