Math lessons for the week of jan 3 6 2012
This presentation is the property of its rightful owner.
Sponsored Links
1 / 11

Math lessons for the week of Jan 3-6 2012 PowerPoint PPT Presentation


  • 33 Views
  • Uploaded on
  • Presentation posted in: General

Math lessons for the week of Jan 3-6 2012. Mrs. Di Todd 5 th grade. Tuesday 1-3-12. Group activity: Show the common factors of 70 and 40: 70 40 Independent activity: Create a Venn diagram of 70 and 40 to display common factors.

Download Presentation

Math lessons for the week of Jan 3-6 2012

An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -

Presentation Transcript


Math lessons for the week of jan 3 6 2012

Math lessons for the week of Jan 3-6 2012

Mrs. Di Todd

5th grade


Tuesday 1 3 12

Tuesday 1-3-12


Math lessons for the week of jan 3 6 2012

Group activity:

Show the common factors of 70 and 40:

70 40

Independent activity:

Create a Venn diagram of 70 and 40 to display common factors.


Wednesday 1 4 12

Wednesday 1-4-12

Number Riddle:

Clue 1: I am a common factor of 28 and 40.

Create factor trees for both numbers.

Clue 2: I am an even number.

Remove all odd numbers

Clue 3: I am not prime.

Remove all prime numbers

What is the number?


Math lessons for the week of jan 3 6 2012

Group activity:

Solve each of the riddles below. For each one:

• Make a factor tree and list the factor pairs for each number.

• Find the factors shared by each number (their common factors).

• Use the other clues to find the answer to the riddle.

• Show your work.

1. I am a common factor of 27 and 45.

I am an odd number.

When you multiply me by 3, you get a number

greater than 10.

What number am I?

2. I am a common factor of 36 and 48.

I am also a factor of 30.

I am an even number.

I am divisible by 3.

What number am I?

3. I am a common factor of 60 and 100.

I am an even number greater than 4.

I am divisible by 4.

What number am I?


Math lessons for the week of jan 3 6 2012

Independent activity:

Write your own factor riddle for a classmate that includes

  • at least 3 clues. Be sure not to give the answer away before the third clue.

  • Exchange papers with a classmate and see if you can solve each other’s riddles.

    Hint: Start with the prime numbers and then multiply different combinations of

    them to get starting numbers.


Thursday 1 5 12

Thursday 1-5-12

Finding Simplest Forms

Find the simplest form for 5/15 and 6/18.

Use your knowledge of prime and composite numbers.

There are 3 ways to find simplest forms:

1. Divide by common factors.

2. Find the GCF and divide by GCF.

3. Use a calculator. See text book page 316.

Math Idea: You can divide by using common factors until 1 is the only common factor, or you can divide by the GCF one time to write a fraction in simplest form.

GCF- greatest common factor


Math lessons for the week of jan 3 6 2012

Group:

Tell whether the fraction is in simplest form:

  • 2/62. 1/103. 8/204. 25/32

    Name the GCF of the numerator and the denominator.

  • 18/306. 8/247. 12/15 8. 50/100

    Write each fraction in simplest form.

    9. 4/1010. 12/3611. 24/3212. 8/20

    Independent:

    Explain how you would find the simplest form of

    16/24 by using both the common factor method and the GCF method.


Friday 1 6 12

Friday 1-6-12

Adding and subtracting Fractions

  • Khan Academy Video: Adding Fractions with Like Denominators

  • Khan Academy Video: Subtracting Fractions

  • Virtual Nerd Video: How Do You Add Fractions with the Same Denominator?

  • Virtual Nerd Video: How Do You Subtract Mixed Numbers with the Same Denominator?


Math lessons for the week of jan 3 6 2012

Group Activity:

Independent Activity:


Resources

Resources:

http://qta.quantiles.com/m/resources/downloads/QuantileResource42017.pdf


  • Login