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.

Science portfolio project of the eldest child. She did some tinkering and made some unusual presentation, like that closed paper for the teacher to open.

This portfolio was used in the Science exhibit. School is closed now and they are enjoying being bored at home, 😀

In the heart of a seed,
Buried deep so deep,
A tiny plant
Lay fast asleep.
“Wake,” said the sunshine,
“And creep to the light.”
“Wake,” said the voice
Of the raindrops bright.
The little plant heard
And it rose to see,
What the wonderful,
Outside world might be.

Science Prep

Sense of touch

My hands can feel rough, smooth, hot, cold, hard and smooth objects.

Caring for my skin:

1. I take a bath everyday.
2. I wash my hands with water and soap.
3. I don’t touch very hot objects.
4. I don’t rub pointed objects on my skin.

Science Prep:

Sense of taste

My tongue can taste sweet, sour, salty, bitter and spicy foods.

Caring for my teeth:

1. I brush my gums and my tongue.
2. I avoid putting sharp objects in my tongue.
3. I avoid eating very hot food.
4. I eat nutritious food.

Your Sense Organs Work Together

Your sense organs work together to make your tasks easier, faster and better. Your brain interprets what you can see, hear, smell, taste and feel. Your sense organs collect information from your surroundings.

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Take Good care of Your Sense Organs

Your sense organs need care. Practice good health habits to keep your sense organs healthy and in good shape.

Science Prep

Sense of hearing

I can hear soft sounds.

I can hear loud sounds.

Caring for my ears:

1. I clean my ears with a cotton bud.
2. I avoid listening to loud sounds.
3. I avoid putting sharp objects inside my ears.