Round Triangles..

Check out this cool video sent to me from Andrew C.!

Folding paper can get you to the moon??

Check out this awesome TedTalk video about how folder paper can get you to the moon...

1. How many times can you fold a paper? Try until the paper gets too small to be folded any further

2. Define exponential growth. How does it work?

3. How many times do I have to fold a piece of newspaper to get 0.008 inches if the original height of my newspaper is 0.002 inches high?


Credit to my fantastic high school student assistant, Matt Chan, for finding the video and writing the questions!

Can you solve the EINSTEIN RIDDLE???

Good luck - email me your solution showing how you solved for a prize!

Cheryl's Birthday Problem!

Some of you may have heard about this Singaporean math problem. It has taken the world by storm and many people have been trying to solve it! Can you figure it out??

If you're stumped, check out this video below:

Pi Day Challenge!

Are you ready to take the PI DAY CHALLENGE??

Check it out below!

Writing Equations Challenge!

Have you ever taken a taxi in Singapore? Taxi meters have a system for determining the price riders pay.

Take a look at this website for information on the fees charged by taxi companies in Singapore.

Write an equation that will help you calculate the cost of traveling to Marina Bay Sands at 9pm on Saturday evening.

This week's #mathchallenge!

How many triangles do you see??

If you don't have Instagram, post your answer as a comment here.

Logic Games!

How is your algebraic and logical reasoning?  Play this  game to see if you can figure out how much certain objects weigh.

Math Multiplication Challenge Problem!!

Santa’s elves are running behind schedule so they end up putting an order in for toys from the SAS booster both.  The booster booth is feeling generous so they give the elves a special price.  

The elves decide to order 20 items composed of water bottles, hoodies, and hats.  The number of water bottles is ⅔ the number of hoodies.  The number of hoodies is ⅗ the number of hats.  The price of each water bottle is $12 and the price of each hoodie is $8.  Each hat costs ½ as much as the water bottle.

1. How many hoodies do the elves buy?
2. How much do the elves spend for the toys?

More Ratios Challenges!! :O

Try these ratios challenges!!

Ratios UBER MEGA Challenge!!

Can you solve this colorful problem that requires you to use your knowledge of ratios??
Click on the image to take you to the website..  If you solve it, email Mr. Munden a screenshot of your solution!!

Thank you Mrs. McComb for sharing!

Who's Better at Speed Ball?

The photo shows the latest best times for each block in speed ball.

F and B are Math 6+ and E, A, and C are Math 6.  All of the Math 6 classes are faster than the Math 6+ classes!  But does this mean that Math 6 is better at speed ball?  Can you tell which class is actually the best?

Here are the number of students in each class:

F: 24 students

B: 24 students

E: 19 students

A: 19 students

C: 19 students

Use unit rates to prove which class is actually the best at speed ball.

Ratios and Fractions Oh My!!

A very inquisitive math student said,

"All fractions are ratios, but not all ratios are fractions."

Do you agree or disagree?  Explain why using models or examples.

Super Gummy Bears!!

VAT19 has Super Gummy Bears for $30 (each Super Bear is equivalent to 1,400 Mini Bears).

The candy warehouse has 5 lb bags of mini gummy bears for $19.50. There are 145 mini gummi bears per pound (yep- that’s a unit rate!).

Which shop has the better deal if you want to get the most gummy bear for your money?

Challenge: After you figure out which shop is cheaper... How much will it cost to buy the same amount of gummy bear at the more expensive shop?

Unit 1 Problem Solving Challenges

If you feel like you have mastered all of the content covered in Unit 1, give these problem solving challenges a try!  Please email me your response along with a complete mathematical explanation.

“Gran, How Old Are You?”

Mom and her four children live with Grandma at 13 Drywater Street.

One day, Charlie, who is the third child, asked, “Gran, how old are you?”

Grandma answered, “My grandmother would have said ‘As old as my tongue and a little older than my teeth!’ but I will tell you how to work out my age.

“If you multiply your mom’s age with your age and with the ages of your brothers and sisters you will get the answer 111111. If you add your Mom’s age along with the ages of all of you four children the total will be my age.”

Charlie worked this out very quickly, because he knew his Mom’s age, his age and the ages of his brothers and sisters.

“Gran!” he called as he ran off to play outside, “You are old!”  How old was Grandma?

The Moons of Vuvv

The planet of Vuvv has seven moons, which lie spread out on one plane in a great disc round it. These Vuvvian moons all have long and confusing names so scientists usually call them by their initials: A, B, C, D, E, F and G, starting from the nearest one to the planet.

When two of these moons line up with the planet it is called a 'lunar eclipse'. When three line up with the planet it is called a 'double eclipse', when four do it is a 'triple eclipse' and so on. Once in a while all seven moons line up with the planet and this is called a 'super-eclipse'.

Moon A completes a cycle around the planet in one Vuvvian year, Moon B takes 2 years, Moon C takes 3 years, Moon D takes 4 years, and so on.

How long is it between each 'super-eclipse' on the planet of Vuvv?

Apples & Remainders

We did this problem in my Math 6+ class, but I don't want my Math 6 students to feel left out!

If you are up for a challenge complete this problem and email me your response.

Best of luck!

Out of the 6000 apples harvested this year, every third apple was too small, every fourth apple was spotted, and every tenth apple was bruised. The remaining apples were good. How many good apples were there?

Clearly SHOW and EXPLAIN your thinking.

Perfect Numbers

I was just doing some work and listening to one of my favorite songs, "Tonight You're Perfect" by the band New Politics.  As I was listening to the song, I was reminded of something we learned in class last week - perfect numbers!

Recall that perfect numbers are numbers whose sum of their proper factors is equal to the number itself.

For example, 6 is a perfect number because its proper factors are 1, 2, and 3.  The sum of 1+2+3 is 6.

By 1999, only 38 perfect numbers have been found!

Can you determine the next three perfect numbers after 6?

Is it possible for a perfect number to be a prime number?

Are all perfect numbers even?

Is it possible to have a perfect number that is prime?

Share your answers as a comment!

Finding HUGE Prime Numbers

In class we have been studying factors and multiples. Naturally, prime numbers arise during these discussions. It's easy to rattle off the first few prime numbers - 2, 3, 5, 7, 11, 13...

But how about when numbers become larger? 4,729 and 7,919 are both prime numbers.

179,424,691 is also a prime number.

So is 797,003,437!

How do you think these huge prime numbers are discovered?

Adam Spencer is an Australian radio host. He isn't a professional mathematician, but rather he is simply fascinated by math like many of you! One of his mathematical interests is prime numbers. In his TED Talk, Adam describes how "monster" prime numbers are discovered by mathematicians all over the world.

Why do you think "hunting" for "monster" primes is so fascinating? 

Would you be interested in helping hunt for monster primes?