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The Solution Is…

December8

Write THREE equations that have a solution of:    x = -1

Writing Expressions

November30

Write an expression for the sequence of operations:

  • Add 3 to x, subtract the result from 1, then double what you have.
  • Add 3 to x, double what you have, then subtract 1 from the result.

HINT: Parenthesis force you to do operations before other operations!

HAPPY THANKSGIVING!!!!!

November23

There is no blog assignment or IXL assignment this week! Enjoy some good family time and and great eats!!!

Push-Ups!

November16

Mr. Mendelson wants to know how his P.E. classes are improving in the number of push-ups they can do. This graph shows the number of push-ups each student in his 1st period class was able to do last month and this month.

image001

 

How much did the mean number of push-ups increase from last month to this month?

This Post Has Class!

November9

 

snap-2

Fun Park Rides

November2

roller_coaster

120 students went to Fun Park for the day. Two-fifths of the group waited in line for the Super Looper. The rest of the group waited in line for the Jet Coaster. A single ride on the Super Looper lasts 10 min and can take 8 people at a time. A single ride on the Jet Coaster lasts 8 min and can take 12 people. Will the group riding the Super Looper finish first or will the group riding the Jet Coaster finish first?

Don’t forget to explain how you know your solution is correct!!!!!

Positives and Negatives!

October26

Safari001

Don’t forget to explain how you know the answer choice you chose is the correct solution!

Shopping in the Lumber Yard!

October19

lumber-yard-04

 

Mark buys a wooden board that is 7 1/2 ft. long. The cost of a wooden board is $0.50 per foot including tax.

How much is the cost, in dollars of the wooden board?

Check My Work!!!

October12

While grading student papers, I noticed that while computing the product of 4.5 and 1.2, this student carefully lined up the decimals and then multiplied, bringing the decimal point straight down and reporting a product of 54.0.

Safari001

Is this solution correct or incorrect? Defend your choice either way with a DETAILED explanation as to why this student was correct or incorrect in solving this math problem!

 

Absolute Value…Hint, Hint!

September28

 

On the number line below, the numbers m and n are the same distance from 0. Which of the following equations is correct:

number line

 

m + n = 0
m – n = 0
m = n
m/n = 1

PLEASE READ THIS!!!! Don’t just select an answer. PROVE IT by using an example (or two)!

Prove it!

September21

Math-Tagxedo

If x<y, which of the following best describes the values of:

  1. It is always greater than 1
  2. It is always less than 1
  3. It is always 1
  4. It varies depending on the values of x and y

DON’T JUST PICK AN ANSWER!!! You need 3 examples of your own. Pick examples for x and y (they must be different because the variables are different), plug them in and see what happens. 

HINT: The values you pick can be whole numbers, mixed numbers, integers, fractions, a mix, ect…

 

Conjectures

September14

sidney_harris_math07

A “conjecture” is an educated guess. I noticed something when I divided a whole number and a fraction so I’m making a “conjecture”. Your job is to see if my conjecture is always true, sometimes true, or never true. You will do this by checking my work and then positing your own 3 examples. If you cannot find an example that disproves my conjecture you should assume it is always true. If you can find even one example that disproves my conjecture you would conclude that my conjecture is sometimes true. In this example, we know that “never true” isn’t an option because my examples are true! Here we go:

I took 60 and divided it by 1/2 (not 2) and my calculator said the answer was 120.

60 ÷ (0.5) = 120

I took 10 and divided it by 1/4 (not 4) and my calculator said the answer was 40.

10 ÷ (0.25) = 40

I took 75 and divided it by 1/10 (not 10) and my calculator said the answer was 750.

75 ÷ (0.1) = 750

My conjecture: When you divide a whole number by a fraction the answer is more than you started with. Is this always true or sometimes true? In order to pick “sometimes true” you have to come up with an example that disproves my conjecture.

Heart Pumpin’!

September7

girl-holding-heart-shaped-symbol-in-swimming-pool-sami-sarkis

Your heart pumps about 5 quarts of blood through its chambers every 60 seconds. A swimming pool (20ft x 60ft) will hold about 65,000 gallons of water.

How many weeks would it take your heart to pump that much blood?

You can find a conversion table HERE!

Canoe Rentals

August30

canoe-animals-small

A canoe rental store on Lake Louis, Canada has 30 canoes that it rents on a daily basis during the summer season. If canoes rent for $15 per day, how much can the store collect for canoe rentals during the month of July?

Netflix

August25

Netflix-on-TV

 

In Reno, Netflix earned $5,393.25 in subscriptions during July. January subscriptions are expected to double that amount. If a Netflix subscription is $7.99, how many subscriptions are expected in January?

Remember that you will need to SHOW and EXPLAIN how you solved your problem. DO NOT just type an answer in!!

Three Digit Palindrome

May26

 

palindrome2

What is the smallest three digit palindrome that is divisible by 18? Explain how you found your answer.

Get the Math in Fashion!

May18

Fashion-Tips

This week you will visit the Get the Math website and discover how math is used in the fashion industry. The link below will start you at the Introduction to this activity. After you watch the introduction, follow the links to the right of the video to Take the Challenge, See how the teams solved the challenge, and finally, Try other fashion challenges. 

Tell me what garment you chose to take the other fashion challenge with and how you solved the challenge! 

http://www.thirteen.org/get-the-math/the-challenges/math-in-fashion/introduction/12/

 

Mother’s Day Math

May11

mothers-day-flowers-44777955025_xlarge

For Mother’s Day you gave your mom 1 rose, 1 daisy, 1 lily, and 1 carnation one flower at a time. How many different ways can you hand those flowers to your mom? Explain how you came up with your solution!

It’s Prime Time for a Riddle!

April27

riddlemethis

Can you find 4 consecutive prime numbers that add up to 220?

Disney Maintenance

April20

MM Ferris Wheel

 

It takes a lot of work to keep Disneyland’s two parks looking top notch. Some of that work is making sure that all the equipment is freshly painted and looking its best. When it comes time to paint the Ferris Wheel, Disneyland maintenance crews need to use a little math to get the job done. The diameter of the Ferris Wheel is 160 feet. They need to paint both of the outside rails of wheel red. How many feet total of red paint will they be painting? Explain how you found your solution.

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