Top 10 BIOLOGY grade 4-6 skills and popular lessons

How you and I changes the environment:

Thanks to Crash Course Kids

Understanding human development and puberty

- Puberty is the process by which a girl or a boy become sexually mature, i.e. able to sexually reproduce.

- Puberty marks the transition between childhood and teenage years.

- It is a period marked by important physical and psychological changes, and often the time when young individuals start to explore their sexuality.

Puberty in girls

Puberty in girls happens between 10-14 years-old and is characterized by:

- development of breast

- hair growth in pubic areas and armpits

- starting of menstruating cycles

- concerns about body-image and relation with peers

- changes in self-esteem and self-confidence

Puberty in boys

Puberty in boys happens between 12-16 years-old and is characterized by:

- Increasing size of penis and testicles

- hair growth in pubic areas, armpits and on the face

- increasing of muscle mass

- deepening of voice

- increased aggression or assertion

- changes in self-esteem and self-confidence

Thanks to AMAZE.org and Watch Well Cast

Major discoveries in biology

- The discovery of the cell by Robert Hooke in 1665, showing that living beings are made up of smaller parts.

- The rule of heredity by Gregor Mendel between 1856-1863, showing that traits are inherited from a generation to another.

- The theory of evolution by Charles Darwin and Alfred Wallace in 1858, showing that species change and evolve over time.

- The discovery of the first antibiotics, penicillin, by Alexander Flemming in 1928, opening the way to treat bacterial infection until now extremely deadly. 

- The description of DNA by Watson and Crick in 1953, opening the era of genetic research.

Some discoveries in biology (~45 minutes long)

https://www.khswaveriders.org/apps/video/watch.jsp?v=65723

Thanks to Kealakehe High School

Reproduction

Thanks to Amoeba Sisters

A description of taxonomy

Thanks to Crash Course

Fishes in Sweden information https://www.ifiske.se/index.php/en/information-english/fish-species

Thanks to Crashcourse, head over to their place to watch more videos!

to Crashcourse and watch more at: https://www.youtube.com/user/crashcourse/featured

Google "the 8 most common trees in country " + your country.

Read about them and write down your own quick fact list

Challenge a friend. Go out in nature and make a game to find and recognize trees. Take a photo of them. It can take days. First to 8 wins a price you decide in advance.

Fun video about Photosynthesis:

Google "the 5 most common birds in country " + your country. Read about them and write down your own quick fact list Challenge a friend. Go out in nature and make a game to find and recognise birds. Take a photo of them and zoom in as much as possible. It can take days. First to 5 wins a price you decide in advance.