Category Archives: Math Minute

#61: Math Contests

Who’s up for a contest?

Each week during the 2018-19 school year, a math contest will be posted on the EY Blog.  There are several ways to access the contests.  1. Your teacher should have a poster in his/her room with a QR code you can scan.  2. You can go to the EY Blog main page and select Math -> 2018-19 Math Contests.  3. Click here!

  • Each contest will be a Google Form that you can take on your school iPad.  Although we have no way of checking, we would like for you to take no more than 20 minutes on each contest.
  • Theses contests were designed for students in grades 5-6, but any student is welcome to participate.
  • If there is more than one submission for any particular student, the score for that contest will not be counted.
  • You MAY use a calculator, but please work by yourself!
  • We will keep a running total of your contest points and award prizes periodically.

Good luck and have fun!

 

#60: Millions, Billions and Trillions

How Much is a Million? by David M Schwartz is one of many picture books I have on my bookshelf.  It’s a great book to help students visualize what a million, billion, and trillion look like.  A Million Dots by Andrew Clements is another one of my favorites.  In the book, you will actually see ONE MILLION dots!  Don’t believe me?  You can count them yourself!  Check to see if you have it in your school library!

I really thought I knew everything there was to know about a million, billion and trillion until I came across this Numberphile video.  If you’re up for a challenge and making your brain stretch a little, then this Math Minute is for YOU!

Directions: 

  1. Print a copy (or have your teacher print you a copy) of this worksheet.
  2. Follow the directions on the worksheet.  When you’re finished, turn in your completed worksheet to the EY Coordinator at your building.
  3. Post a comment below about something new/interesting you learned from the video.

#59: World’s Favorite Cookie

What is your favorite kind of cookie?  Mine is chocolate chip and I especially love my mother-in-law’s recipe that has pudding in the batter.  Yum!

For this week’s Math Minute, you have an opportunity to win a package of cookies for your class.  See the list below for your choice of activities that can get you entered!

  • Watch this video about one of America’s favorite cookies.  Jot down some facts as  you watch the video.  Complete this quiz afterwards.  One response per person.  Duplicate responses will be eliminated.
  • Check out this website listing 15 interesting facts about the “World’s Favorite Cookie”.  Post a comment below with something new and interesting you read.  One comment = 1 Entry for the cookies for your class.  In your comment, include your first name, grade, and school (i.e. Toby, 2, Sunset).
  • Oreo Thins have a diameter of 4.5 centimeters and a thickness of 7.5 millimeters.  Write your answers to the following questions on a sheet of paper with your first and last name, school, grade, and teacher.  Have your teacher put it in the “Pony” to Sunset Hills EY.  One entry per student please.
    •  What is the Circumference (C = pi * diameter) of an Oreo Thin?
    • What is the Area (A = pi * radius squared) of an Oreo Thin?
    • How tall would a stack of 10 Oreo Thins be?

image taken from https://www.pdclipart.org/

 

#58: Math Video A Day

Research has been conducted on the effectiveness of using video in the classroom, and according to one study by Kaltura, video is better than the written word when it comes to information retention, education, and overall experience.

I can vividly remember my 7th grade math teacher showing a video call The Case of the Missing Chick Cows : Adding Positive and Negative IntegersIn the video, the Chick Cows were disappearing all around town and farmers started to blame each other for stealing them, only to find out that at night, the Chick Cows were linking arms and flying away.  Some of the Chick Cows had left wings and others had right wings.  When they linked arms together, they were able to fly away.  Over 30 years have past since I watched that video and I still remember it.  Videos have a way of making information “stick” and we are in a day and age were we have access to a plethora of videos that can help us learn.

For this Math Minute, print off the worksheet, “A Math Minute A Day” and use a QR Code reader to scan the code for each video.  As you watch each video, jot down new and/or interesting information.  What connections can you make?  Which video did you find the most interesting?  Silly?  Entertaining?  Let us know by leaving a comment!

Image taken from: https://www.pdclipart.org/

#57: Polyhedron

Screen Shot 2015-01-05 at 1.20.10 PMAn icosahedron is a polyhedron that has twenty triangular faces.  A stellated icosahedron has each of those faces raised to a triangular pyramid.

Wow!  There’s a lot of big words in that sentence!  Find out more about polyhedrons by visiting this website: http://www.mathsisfun.com/geometry/polyhedron.html

How can you spend your Math Minutes this week?
  • Post a comment and share something new you learned about polyhedrons.  You are not limited to the website listed above.  When posting a comment, use your first name and school (i.e. Tyler, Sunset).  Do not publish your email.
  • Make a Modular Origami Stellated Icosahedron by following these directions: http://www.wikihow.com/Make-a-Modular-Origami-Stellated-Icosahedron  Email a picture of your completed stellated icosahedron to your school’s EY Coordinator.
  • Find instructions for making other polyhedron.  Here is one resource: https://www.korthalsaltes.com/  Email a picture of your completed polyhedron to your school’s EY Coordinator.
  • Post a comment and answer the question:  How is origami related to math?  When posting a comment, use your first name and school (i.e. Tyler, Sunset).  Do not publish your email.
  • Find instructions to make an origami animal using the WWF Together app on your iPad.  Email a picture of your completed origami animal to your school’s EY Coordinator.

Screen Shot 2015-01-05 at 2.23.48 PM

We will post pictures of your origami creations on our Student Showcase Wiki.

 

#56: Math and Animation

In the Numberphile and TED Ed videos linked below, Tony DeRose from Pixar talks about 3D animated characters and the math involved to make them look so smooth.  It turns out there is a TON of math behind some of our favorite animated films, and it starts with some of the math learned in middle school!

How can you spend your Math Minutes this week?
  • Watch the videos linked below and then post a comment sharing something new you learned about math and animation.  When posting a comment, use your first name, grade, and school (i.e. Tyler, 5, Sunset).  Do not publish your email.
  • After watching the videos, click on this link and answer the questions.
  • Create your own animation using an app on your iPad.

Numberphile Video:  http://tinyurl.com/ndvpup7

TED Ed Video:  http://tinyurl.com/onqhkxk

#55: Coordinate Geometry

coordinates

Coordinate Geometry is one of my favorite areas of math.  There’s just something about getting a sheet of order pairs and carefully plotting them on graph paper…connecting the dots to reveal a picture.  If that’s your sort of thing too, check out Option 3 below.  Happy plotting!

How can you spend your Math Minutes this week?
  1. Learn the basics of coordinate geometry by watching this video (you have to scroll down the page a bit).  Read through the text underneath the video too.  Post a comment about something new you learned.  When leaving a comment, type your first name, grade level, and school (i.e. Trevor, 3, Sunset).  Do not type in your email address.
  2. This video gives a musical explanation of the inventor of coordinate plane geometry, Rene Descartes.
  3. Print out (or have your teacher print out) these worksheets.  Plot the ordered pairs on the graph paper and reveal a warm surprise!  Take a picture of your completed drawing and send it to the EY Coordinator at your building.
  4. Hopscotch is a free programming app that utilizes coordinates plane geometry.  The video link below explains some basics of Hopscotch and another way to spend your Math Minutes this week.  NOTE: Due to app updates, the Hopscotch video may not match perfectly with the up-to-date-version of the app.  After watching the video, create your initials/name in Hopscotch.  Take a picture of your completed program and send it to the EY Coordinator at your building.  We would love to post it on our Student Showcase Wiki!

Link to Hopscotch Video Tutorial:  https://www.youtube.com/watch?v=1AY57Cmra18&feature=youtu.be

hopscotch

#54: Multiplication

Multiplication. It is one of the four types of operations you learned in math (along with addition subtraction and division). There are many different ways to multiply numbers. However, sometimes, multiplying really big numbers can be a challenge. Luckily, there are many different techniques you can use to solve large multiplication problems.

How can you spend your Math Minutes this week?

  1. Watch this video about multiplying using lines. Post a comment about something new you learned.  When leaving a comment, type your first name, grade level, and school (i.e. Trevor, 3, Sunset).  Do not type in your email address.
  2. Print out (or have your teacher print out) this worksheet. Use the method in the video to come up with answers to multiplication problems. You can check your answers on the second page of the worksheet. If you feel comfortable with those problems and want to try multiplying bigger numbers, then print out this worksheet.
  3. Want to learn another math trick? Watch this video for a way to check the answers to your multiplication problems you solved in the worksheets.
  4. Use the app Explain Everything to do the problems. Draw out the pictures and send them to your EY coordinator.

*Lesson inspired by multiplication lessons from East Asian schools

#53: Cribbage

IMG_8825

My family enjoys playing pitch,  31, sevens and trash.  However, my absolute FAVORITE game is cribbage!  It involves strategy and math, which is why I like it so much!

How can you spend your Math Minutes this week?
  1. Do you know how to play cribbage?  If so, leave a comment below with a “thing to remember” when playing cribbage.  When leaving a comment, type your first name, grade level, and school (i.e. Trevor, 3, Sunset).  Do not type in your email address.
  2. In cribbage, the Jokers are removed from the deck.
    • The Ace is worth 1
    • The face cards (Jack, Queen, and King) are each worth 10
    • The other cards (2 through 9) are each worth their number value
  3. Here are some of the ways you can earn points playing cribbage:

One of the ways to earn points in cribbage is to have cards that add up to fifteen.  In the picture below, the King and one of the 5’s make 15 so that is 2 points.  The King and the other 5 also make 15, which is another 2 points.  You might notice that there is a 5 that is face up on the deck.  This can also be paired with the King for 15 for another 2 points.  Finally, the three 5’s (2 in the hand and one on the deck) add up to 15.  This is an additional 2 points.IMG_8825When you have a pair of the same card, you earn 2 points.  The pair could be in your hand, or one of your cards could be paired with the card that is face up on the deck.  If you have 3-of-a-kind, that is worth 6 points.  In the picture above, there are two 5’s in the hand and one 5 face up on the deck.  Not only does that make 15, but it is also 3-of-a-kind which earns you 6 points.

A “flush” is when you have 4 or more of the same suit (clubs, spades, hearts, or diamonds).  If you had 4 hearts in your hand, you would earn 4 points.  If the card that is face up on the deck is also a heart, you would get 5 points.  The hand below shows 5 clubs so you would get 5 points.

Hand7

A “run of 3” is when you have 3 cards in numerical order.  You could also have a run of 4 or 5 cards.  Let’s say you had a 3, 4, 5, and 6 in your hand.  You would have a “run of 4” which is 4 points.  If the card on the deck was a 2 or 7, you would have a run of 5.  The hand below shows a run of 5.

RunOf5

The pictures below show several cribbage hands.  See if you can add up the points correctly!  Leave a comment with the “hand #” and an explanation of the total points.  You can also post a question if you’re not sure.  Check back often to see if all the hands are correctly totaled.

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What is another way you can earn points in a cribbage game?  Do a little research and post a comment.  Would you be interested in having a cribbage tournament?

#52: Super Egg

Numberphile is a YouTube channel that posts many videos about many different math concepts. The channel has numerous videos on many real life examples. It is a great channel to learn about concepts not necessarily taught in school. One video that the channel contains is about a super egg, or a superellipse.

How can you spend your Math Minutes this week?

  • Watch the video linked below and then post a comment sharing something new you learned about math, geometry and/or engineering.  When posting a comment, use your first name, grade, and school (i.e. Tyler, 5, Sunset).  Do not publish your email.
  • After watching the videos, click on this link and answer the questions.
  • Share this video with your parents, friends, and/or adults and ask them about real life uses of math

Numberphile Video: http://youtu.be/GznQgTdEdI4

*Lesson inspired by Numberphile video about superellipses