Elementary School Lessons

Greatest Common Factor

September 27, 2010 From the Teacher, Grade 4, Homeschoolers No More, Mathematics, Reviewers No Comments

Greatest Common factor or GCF is the largest whole number that divides evenly into each of the numbers.

FACTORS are the numbers that you multiply to get another number. [ 3 X 5 = 15 where the factors are 3 and 5]

To get the greatest common factor, one can use two methods:

First is to list all the factors of the given numbers. The list the common factors or the same factors for these given numbers. When this has been done, choose the biggest number among the common factors.

ex: 30 = 1, 2, 3, 5, 6, 10, 15, 30

20 = 1, 2, 4, 5, 10, 20

The common factors for 30 and 20 are 1,2, 5 and 10 therefore the greatest common factor is 10.

Another method for finding the greatest common factor is listing down the prime factors. After listing the prime factors, multiply these prime factors.

PRIME FACTORS are numbers that can only be multiplied by 1 and itself [ex: 2,3,5,7,11…]

The prime factors for 30 are 5 x 3 x 2

The prime factors for 20 are 5 x 2 x 2

The prime factorization of 30 and 20 have one 5 and one 2 in common. Multiply these common prime factors and you get the greatest common factor.

5 x 2 = 10

Panunumpa ng Scout at Batas ng Scout

September 25, 2010 Enrichment, Grade 4, Philippines, The Son No Comments

ANG PANUNUMPA NG SCOUT

Sa ngalan ng aking dangal,

ay gagawin ko ang buong makakaya;

Upang tumupad sa aking tungkulin,

sa Diyos at sa aking bayan,

ang Republika ng Pilipinas

at sumunod sa Batas ng Scout;

Tumulong sa ibang tao sa lahat ng pagkakataon

Pamalaging malakas ang aking katawan,

gising ang isipan at marangal ang asal.

ANG BATAS NG SCOUT

Ang Scout ay:

Mapagkakatiwalaan

Matapat

Matulungin

Mapagkaibigan

Magalang

Mabait

Masunurin

Masaya

Matipid

Matapang

Malinis at

Maka-Diyos

September 23, 2010 Autumnal Equinox

September 23, 2010 Enrichment, From the Teacher, Science No Comments

Today marks this year’s Autumnal Equinox and is the first day of Autumn in the northern hemisphere.

What is Autumnal Equinox? Autumnal Equinox in the northern hemisphere is the day when night and day almost have the same length. The Sun crosses the celestial equator moving southward.

In the Southern hemisphere, the Autumnal Equinox corresponds to the center of the Sun crossing the equator moving northward. This occurs on the date of the northern vernal equinox.

Nosebleed? I am too.

Read more here: The September Equinox Explained

Here is a photo of our “Autumn Tree” that sheds leaves in sync with the Autumn season in the northern hemisphere.

Scout Promise

September 22, 2010 Enrichment, Grade 2 Lessons, Philippines, Younger Daughter No Comments

Scout Promise

Sa aking karangalan, gagampanan ko ang aking tungkulin
sa Diyos at sa aking bayan;
tutulong ako sa aking kapwa sa lahat ng pagkakataon
at isasabuhay ko ang Batas ng Girl Scout.

On my honor, I will do my duty:
to God and my country;
to help other people at all times;
and to live by the Girl Scout Law.