Learn how we classify living things using taxonomic rank. There are 8 levels of classification.
How do you create names for organisms that can be used anywhere in the world? This is where taxonomic classification, also called the Linnaean system, comes into play. Change music

Named after its inventor, Carl Linnaeus, a Swedish botanist, zoologist, and physician, the Linnaean classification system has 8 levels of classification. You may also hear this called a taxonomic rank. You will often see the levels displayed like a triangle. This is because the levels at the top are broad and general whereas the levels at the bottom are more specific. As you move down levels of taxonomic classification, the organisms will be more similar to one another.

The 8 levels of Taxonomic Classification are:

Domain
Kingdom
Phylum
Class
Order
Family
Genus
Species

Learn the difference between myopia and hyperopia
Myopia which is also called nearsightedness is when you can see items up close clearly and distance objects are blurry.
Hyperopia is the opposite. You can see distant objects clearly and objects that are close are blurry.

Learn what an ion is in chemistry. You can produce a charged atom by taking a neutral atom and adding or removing one or more electrons which are called an ion
A positively charged ion is a cation
A negatively charged ion is called an anion.

Paleozoic EraPaleozoic era was 544 to 245 million years ago
Paleozoic means “ ancient life” and is part of the phanerozoic eon along with the cenozoic, and mesozoic eras
Let’s hit some highlights of this era
Early during the Paleozoic era trilobites, echinoderms, and other marine invertebrates such as coral dominated the oceans.
Jawless fish also lived during this era
Evently sharks and other bony fish appear
However, as time passed life did not remain in the sea.
Land plants began to appear such as ferns and some trees later in this era
Life was also crawling out of the ocean
The first vertebrates appeared Among these vertebrates was a tetrapod which was a vertebrate that could live on land
Other vertebrates would appear including snakes,crocodiles,
Reptiles and insects scatter throughout the world and amphibians appear
The supercontinent Rodinia brook apart early in this era, but by the end of the era the supercontinent Pangea was formed.

Types of Proteins and their function in the human body
Proteins are made up of hundreds or thousands of smaller units called amino acids, which are attached to one another in long chains. Proteins are put together at ribosomes from a blueprint stored in DNA and more specifically from sections of the DNA called genes. There are 20 different types of amino acids that can be combined to make a protein. The order of amino acids determines each protein’s unique shape and its specific function or job.

Let’s take a look at 5 important functions of proteins
Messenger Proteins.
Enzymatic Proteins
Structural Proteins
Defensive Protein
Storage and Transport Proteins

The Law of Conversation of Mass states that the mass of the reactants must equal the mass of the products in all chemical reactions.
I use a simple demonstration to show this point. I use baking soda and vinegar which is a simple chemical reaction, to demonstrate the law of conservation.
Correction:
0:41 I accidentally said grams instead of ounces while weighing the materials. My mistake.

The Earth is 70 % water. However, only 3% of this water is freshwater. Much of this freshwater is frozen in glaciers, you will find some of the water in rivers and streams, and almost 30% of this freshwater is groundwater.
But What is groundwater? Groundwater is water that finds it way between the gaps of rocks and sediments underground.
As the water seeps into the ground it may find it’s way into an aquifer. Aquifers are underground rock layers saturated with groundwater. An aquifer is not an underground river but large porous layers of rock.

Learn about the first four planets called the terrestrial planets and the gas giant planets called the Jovian planets.
The terrestrial planets include Mercury, Venus, Earth, and Mars.
These planets are small, rocky, and close together.
The Jovian planets in Jupiter, Saturn, Uranus, and Neptune.

The Phanerozoic Eon is part of the geologic timescale.
This Eon consists of three major eras.
The Paleozoic era, the Mesozoic era, and the Cenozoic era.
The Paleozoic era is also called the "ancient life".
Life echinoderms, trilobites, and jawless fish roamed the ocean along with sharks.
Tetrapods crawled out of the ocean and started living on land.
Insects began to spread along with reptiles and amphibians.
The supercontinent Rodinia broke apart and then drifted back together creating Pangea.
The Mesozoic era is called the "age of reptiles".
Dinosaurs prospered during this era.
The Cenozoic era can be called the "age of flowering plants" or the age of the insects."
Mammals, flowering plants, and insects all prospered during this era.

Prime numbers 1-100
Prime numbers are only divisible by itself and 1
There are 25 prime numbers between 1-100
They include,

2,3,5,7,11,13,17,19,23.29,31,37,
41,43,47,53,59,61,67,71,73,79,
83,89,97

Learn how to subtract fractions,
In this video, I subtract 3/4 - 5/6
Steps
Find a common denominator
Rename the fractions
Subtract
Simplify

Learn how to set up and solve word problems. Although they may seem tricky at first solving word problems can be fun.
I use these four steps to solve word problems. If you follow these steps you will have an equation set up to solve the problem.
Identify the variable
Identify the operation
Write an equation
Solve and label