What is the pH scale? The letters pH stand for the potential of hydrogen and is a measure of the concentration of hydrogen ions in a water-based substance?
pH is organized into a scale of acids and bases with neutral. substances right in the middle
The range goes from 0 to 14, with 7 being neutral. pHs of less than 7 indicate acidity, whereas a pH of greater than 7 indicates a base.
pH is also organized by color. Red usually indicates an acid and blue usually represents a base.
In the video, I cover many pH examples including examples of acids you find around you and examples of bases.

Equivalent Fractions look different but measure the same thing! I place several equivalent fractions on a number line in order to help you see that they measure the same things. Remember, a fraction measures parts of a whole.

Mesozoic EraIn this video I would like to talk about the Mesozoic era on the geologic time scale.
The Mesozoic era is part of the Phanerozoic Eon along with the Paleozoic and Cenozoic eras.
Mesozoic means “middle animals” and is a time of rapid change.
This era has also been called the age of reptiles and age of dinosaurs
The Mesozoic era was roughly 65 million years to 250 million years ago.
Let’s hit several highlights of this era
The Mesozoic era began after a mass extinction.
The shape of the continents looked different. At the beginning of this era, there was a super
Continent called Pangea. Over time this supercontinent broke apart and the continents started drifting apart.
The climate was warmer than today
The first mammals appear but are very small and they don’t begin to thrive until the Cenozoic era.
Dinosaurs also appear and begin to scatter and prosper.
The dinosaur population peaks during this era.
However, at the end of this era, the dinosaurs die off
The first birds appear and begin to scatter throughout the world.
The dominant plant is a cone-bearing tree and plants
At the end of this era, flowering plants begin to appear
So there we go the Mesozoic era,
Dinosaurs and cone-bearing plants

How do we breathe? The lungs and diaphragm work together to bring oxygen into the lungs and to move carbon dioxide out of your lungs.
The diaphragm is a large muscle that is found under your lungs. Your lungs are actually composed of millions of tiny air sacs and depend on the diaphragm in order to inflate
Your rib cage also helps out by having cartilage which allows the rib cage to expand and contract.
When you take a deep breath your diaphragm moves down and a low-pressure area is created and air flows into your nose and mouth. This process is your respiratory system hard at work.
Air enters the nose and mouth and enters the nasal passages.
Your nose and nasal passages have tiny hairs called cilia and mucus that help filter dirt and pollen out of the air.
The air next moves to the pharynx which is located at (the back of the mouth)
From the pharynx, it moves to the larynx which is commonly called the voice box.
the voice box (makes sounds when air
passes over the vocal cords)
Epiglottis: the flap of connective tissue that covers
over the larynx during breathing
It stands open during breathing, allowing air into the larynx. During swallowing, it closes to prevent choking on food

From the larynx, air travels to the Trachea which is a rigid tube made of cartilage.
The trachea leads into two tubes called the left and right bronchus
These tubes continue to branch until you reach a tiny air sac called a alveoli
At the alveoli, oxygen diffuses into the capillaries and carbon dioxide diffuse into the alveoli and is exhaled.
As you exhale the diaphragm moves upward and carbon dioxide and airflows out.

Your metabolism is the sum of all chemical reactions in your body.

The cell membrane surrounds the cell and protects the cell, communicates with other cells, and controls what enters and exits the cell.
The cell membrane is made of phospholipids which have a polar and nonpolar end.
The cell membrane also has proteins and carbohydrates.
In this video, I cover what the cell membrane is made of and the structure and function of the cell membrane.

Let's learn about matter, atoms, and elements!
We hope you are enjoying our large selection of engaging core & elective K-12 learning videos. New videos are added all the time - make sure you come back often to learn more! If you'd like us to cover any additional topics, please let us know. For practice, assessment, and many interactive activities that go along with each video, as well as a teacher/parent dashboard, go to Miacademy.co for Grades K-8 or Miaprep.com for grades 9-12!

Learn some Spanish words you can use to talk about the park!
We hope you are enjoying our large selection of engaging core & elective K-12 learning videos. New videos are added all the time - make sure you come back often to learn more! If you’d like us to cover any additional topics, please let us know.
For practice, assessment, and many interactive activities that go along with each video, as well as a teacher/parent dashboard, go to Miacademy.co for Grades K-8 or Miaprep.com for grades 9-12!

Learn the differences between types of financial institutions with Justin!
We hope you are enjoying our large selection of engaging core & elective K-12 learning videos. New videos are added all the time - make sure you come back often to learn more! If you'd like us to cover any additional topics, please let us know.
For practice, assessment, and many interactive activities that go along with each video, as well as a teacher/parent dashboard, go to Miacademy.co for Grades K-8 or Miaprep.com for grades 9-12!

Learn what it's like to be a certified nursing assistant from someone working in the field!
We hope you are enjoying our large selection of engaging core & elective K-12 learning videos. New videos are added all the time - make sure you come back often to learn more! If you'd like us to cover any additional topics, please let us know. For practice, assessment, and many interactive activities that go along with each video, as well as a teacher/parent dashboard, go to Miacademy.co for Grades K-8 or Miaprep.com for grades 9-12!

We hope you are enjoying our large selection of engaging core & elective K-12 learning videos. New videos are added all the time - make sure you come back often to learn more! If you'd like us to cover any additional topics, please let us know. For practice, assessment, and many interactive activities that go along with each video, as well as a teacher/parent dashboard, go to Miacademy.co for Grades K-8 or Miaprep.com for grades 9-12!

Learn about how the Senate functions!
We hope you are enjoying our large selection of engaging core & elective K-12 learning videos. New videos are added all the time - make sure you come back often to learn more! If you'd like us to cover any additional topics, please let us know. For practice, assessment, and many interactive activities that go along with each video, as well as a teacher/parent dashboard, go to Miacademy.co for Grades K-8 or Miaprep.com for grades 9-12!

Learn about the Great Smoky Mountains National Park and its history!
We hope you are enjoying our large selection of engaging core & elective K-12 learning videos. New videos are added all the time - make sure you come back often to learn more! If you’d like us to cover any additional topics, please let us know.
For practice, assessment, and many interactive activities that go along with each video, as well as a teacher/parent dashboard, go to Miacademy.co for Grades K-8 or Miaprep.com for grades 9-12!

Learn about forms of financial exchange used in the past, the forms we use today, and what forms of financial exchange might be used in the future.
We hope you are enjoying our large selection of engaging core & elective K-12 learning videos. New videos are added all the time - make sure you come back often to learn more! If you’d like us to cover any additional topics, please let us know.
For practice, assessment, and many interactive activities that go along with each video, as well as a teacher/parent dashboard, go to Miacademy.co for Grades K-8 or Miaprep.com for grades 9-12!