Elementary School Lessons

Review Notes for 5th grade Science covering Reproductive System.

MALE reproductive system
• Primary male reproductive organs are the testes, enclosed in a suspended sac-like structure called scrotum.

• Each testis has coiled tubes known as seminiferous tubules. Uncoiled, these measure 250meters. Inside the tubules are packs of cells that produce sperm cells.

• Epididymis is a set of coiled tubes (one for each testis) where sperm cells are temporarily stored.

• Vas deferens is a muscular tube that transports the sperm-containing fluid called semen.

• Seminal vesicles are structures attached to the vas deferens beside the urinary bladder.

• The prostate gland is located at the base of the urethra, just below the bladder. It produces part of the semen.

• The channel that carries the semen to the outside of the body through the penis is the urethra.

• Found between seminiferous tubules are interstitial cells that produce the male sex hormones called testosterone. Testosterone is the hormone responsible for the development of secondary male characteristics like facial hair growth and deepening of the voice, among others.

• A hormone is a substance that has a specific effect on a body activity.

Ang sugnay ay lipon ng mga salitang may simuno at panaguri ngunit bahagi lamang ng pangungusap.

May dalawang uri ng sugnay:

• Ang sugnay na makapag-iisa ay bahagi ng pangnungusap na may buong diwa kahit ihiwalay sa pangungusap.

• Ang sugnay na di-makapag-iisa naman ay hindi nagbibigay ng pinangungunahan ng pangatnig gaya ng ngunit, samantalang, kung, para, habang.

Halimbawa:

• Sugnay na makapag-iisa

1. Ang kalinisan sa kapaligiran ay dapat na panatilihin

• Sugnay na di-makapag-iisa

1. nang maging malusog ang bayan natin.

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Ang parirala ay lipon ng mga salitang walang simuno at panaguri. Wala itong buong diwa.

Halimbawa:

• ang hangin

• ang mga pulis

• mahirap gawin
  

Grade 4 Math Reviewer: Ratio

Ratio

Write the ratio in two ways:

1. 5 books to 10 students

2. A dozen eggs to 36 eggs

3. 3km to 2000m

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Grade 4 Math Reviewer: ratio

Angles

1. A _______ is a part of as line that has one endpoint and extends infinitely in one direction.

2. An _________ is made up of two rays having a common endpoint called vertex.

3. A __________ is used to measure an angle

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Grade 4 Math: Angles Reviewer

1. A ________ is an exact location in space that has no dimension

2. A ________ is an infinite set of points that extends infinitely in both directions

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Grade4Math Basic Geometric Elements

The son brought home a hamster yesterday. It’s not his. It belongs to a classmate who brought it for the Science Week but forgot to bring it home last Thursday.

Friday was a holiday and they didn’t have school.

Saturday was rehearsal day for the Dramatics Club where the son is a member. He was the one brought home the hamster because he was a classmate of the owner.

We went to the supermarket to look for hamster food. We found none save for plastic containers of rabbit food. I have to say “no” because if he brings back the hamster and we still have heaps of rabbit food, the kids might ask for a hamster or a rabbit. Which I have to say “no” to again and they will feel sad.

We gave the hamster apple slices and it nibbled on the slices in no time. He was busy going round and round the wheel last night and was fast asleep in the morning.

Anyway…

Tomorrow, he will bring back the hamster and give it back to the owner.

For the children’s university week, celebrated every February, the grade four field demonstration was Sayaw sa Bangko.

Sayaw sa Bangko or Sayaw ed Tapew ng Bangko is a folk dance from Pangasinan, a province from the northern Philippines. Performers dance on wooden benches, changing places with each other and at times jumping on and off the bench.

The son is wearing shoes, the pair of slippers which was prepared earlier was forgotten,

Balance and helping each other to stay on the bench is important for the two dancers on the bench.