Skip to main content

Turn Daylight Savings Time into a Teachable Moment

Don’t lose sleep over this, but Daylight Savings Time (DST) is here!

On March 11th it's time to set your clocks forward and say goodbye to one hour of sleep!

There’s no time to waste! Make this year’s Daylight Savings Time an engaging and meaningful experience for you and your students.

RAFT has plenty of ideas to help you and your students get ready for DST:

  •  “Time for Shadows” shows you how to quickly assemble an equatorial sundial that you can quickly adjust for daylight savings time! Learn about sun positions and shadows with drinking straws, a protractor, a compass, and a CD!
  • Use a view binder cover, a watch, a paperclip, straws, the compass, and other easily accessible resources to create a “View Binder Sundial” similar to the one our forefathers used to tell time before clocks were invented!
  • Create a sand timer (based on the concept of an hourglass), and learn how to measure time with “Sand Timer Primer.”

Why do we have Daylight Savings Time? It is because many people want to gain additional daylight during the early summer evenings. So, clocks are advanced by one hour in the spring, and in the fall, they are set back one hour (the phrases “spring forward” and “fall back” help you remember this). Since 2007, DST begins on the 2nd Sunday of March and ends on the 1st Sunday of November. This year, Sunday, March 11, 2018, 2:00:00 am clocks are turned forward 1 hour to Sunday, March 11, 2018, 3:00:00 am local daylight time.

People follow DST throughout much of the U.S., Canada, and Europe since World War I. Today, about 70 countries around the world observe DST in some form, including most of the United States, but U.S. Federal law does not require its observance. For instance, Arizona, Hawaii, and the territories of Puerto Rico, the Virgin Islands, and American Samoa do not use DST since these areas receive so much sun throughout the year that it is not helpful to gain another hour of sunlight in the summer.

--- By Jeanne Lazzarini, RAFT Math Master Educator/Curriculum Writer

Comments

Popular posts from this blog

Are you ready for Pi?

Time to get ready fer Pi Day at RAFT me hearties!  Set yer compasses an’ sails fer FREE Pi Day activities on March 8thbetween 3:30 to 5:30 on th’ main poop deck (aye-aye in th’ “Kit Area”) at SJ RAFT!
RAFT’s very own notorious wench, Jeanne Lazzarini (RAFT Math Master Educator), prepared a boatload of Pi Day activities to share with yer classes fer Pi Day (celebrated on March 14th every year)! Pi, (also written as π; th’ ratio of th’ circumference of a circle to its diameter) be an irrational number that goes on forever without any repeating digits, starting with 3.14159… π is illustriously celebrated over land an’ high seas March 14th (get it? On 3.14…!).    Discover great “make-an’-take” Pi day activities that prepare ye fer real Pi day!  Here’s a RAFT idea sheet fer Pi Day you can use now: Pi Day Pin. Make sure X marks th’ spot on ye calendars this March 8th, or walk th’ plank me scallywags!   Shiver me timbers an’ yo-ho-ho!  ‘Tis a RAFTy life fer me, Bucko!!!  Arrrgggghhhhh!

¡Olé! Celebrate Cinco de Mayo

¡Olémis amigos! Holy Guacamole! It’s once again time to celebrate Cinco De Mayo—the 5th of May! Instead of all the controversy around Mexico in the past year, this may be an excellent opportunity to educate your students and allow them to ask questions about what they hear on the news. Cinco de Mayo is not Mexico’s Independence Day from Spain (which is September 16th)! “¡Ay, caramba!”as Bart Simpson would say….

This is “la verdad” (the truth): when the French invaded Mexico in 1862, Mexican General Ignacio Zaragoza’s force of 4,000 soldiers defeated 8,000 French soldiers in the Battle of Puebla on May 5th. The Mexicans’ courage inspired Mexican Americans (Chicanos) to celebrate the victory even though the French occupation continued four more years. Later in the 1960’s and 70’s, Chicanos involved in the civil rights movement associated Cinco de Mayo with their quest for respect in the U.S. They identified with the Native Mexican and Mestizo (people of mixed Native Mexican and European de…

Use the Winter Olympics to engage your students

The 2018 PyeongChang Winter Olympics are right around the corner!
This worldwide event offers excellent opportunities to use the Olympics to inspire your students to learn about many mathematical concepts such as slope. How can the Olympics help students understand slope? Think of ski slopes! Ask students to watch the Olympics this year on TV and to look for sports that use steep paths (e.g., snowboarding, downhill skiing, alpine skiing, bobsleighing, etc.)! Back in class, have students recreate replica “ski slopes” using sections of white foam board. Place one end of a foam board against a wall with the opposite end touching the floor at an angle so that it forms the hypotenuse of a right triangle (the right angle is between the wall and the floor). Refer to the vertical distance (“rise”) from the floor to where the top edge of the board touches the wall as the y-intercept. Refer to the horizontal distance (“run”) starting at the wall and to the bottom of the board farthest away from t…