Learn all about different types of slopes. These include positive slope, negative slope, undefined, and a zero slope. The slope is defined as the rate of change or the steepness of a line and is represented by the letter m.
This video will answer a couple of questions like,
What type of slope is a vertical line?
Which line has a zero slope?
What does an undefined slope look like?
Does a positive slope go up or down?

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

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

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

The earth has an abundance of water, and even appears blue from space. However, only a small percentage of the water on Earth is freshwater and much of this freshwater is either frozen or unattainable.n other words, freshwater only makes up roughly 3% of all of the water on Earth You will find the bulk of freshwater in these 4 main sources.

Surface waters ( Lakes, Rivers, Streams, Ponds, Swamps, marshes)

Glaciers and IceCaps

Groundwater ( Shallow and Deep)

Atmosphere

Learn how to solve percent of videos. In this video I solve,
80% of what number is 12.
In order to solve this video you can use the formula is over of equal percent over 100

Learn how to calculate force and distance using the work formula.
You can use the work triangle in order to help you calculate either force in Newtons or distance in various units.

0:00 Introduction to the calculate work triangle
0:24 During a race a runner puts out 6000 Joules of work. If he runs a distance of 30 m, how much force did the runner put out?

01:17 John’s output of work was 16 Joules. He pushed the sled with a force of 8 Newtons. How far did he push the sled?

02:05 If it takes 500 Joules of work to move a chair 20 m, what force was needed?

03:01 What distance was your bike moved by a force of 20 N if the work was 1600 Joules?

Biodiversity and ecosystems.
Biodiversity is the variety of life in an area that is determined by the number of species in that area. In simple terms “ Biodiversity is the number of different individuals and life forms in an area.
As biodiversity increases so do the health of the ecosystem increases.
Think of it as if you were running a business.
You want your business to be healthy and make money. Imagine you sell shirts. If you only sold a black shirt with a heart you are limited and if these shirts go out of style you are out of business. If you have a variety of shirts as fashion changes you are better able to adapt to these changes and continue to make money.
As biodiversity increases the ecosystem has a greater ability to adapt to changes.
and a healthy ecosystem has a greater chance of recovering from disasters.
Biodiversity can be broken down into three types
Genetic diversity
Species diversity
Ecosystem diversity

Learn to tell time on a clock that has three hands. The hands represent the hour, minute, and seconds.
There are 24 hours in a day
60 minutes in an hour
60 seconds in a minute

Use these 5 steps in order to make reading time easy
Step 1 start at the small hand look where the hour hand is pointing and write this number down.
Step 2 Draw two dots
Step 3 Read the large hand
Step 4 Draw two dots
Step 5 Read the skinny hand the seconds

Learn how to find mean, median, mode, and range with a frequency table. A frequency table organizes data so finding the range is easy. For the range just subtract the smallest from the largest number.
The mode is the number that appears most often.
The median is the number in the middle and the mean is the average.
I show you how to find each of these statistics easily from a frequency table.

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.

Learn how to find the area of a square using the diagonal which creates a 45 45 90 triangle. The special rules of a 45 45 90 triangle can be used to find the side length.

Digestion begins in the oral cavity which we normally call the mouth. The mouth is responsible for mechanical and chemical digestion and prepares the food for digestion. I explain the role of the mouth in digesting food. The mouth has a very important function in digesting food..
The mouth has 32 teeth that help with mechanical digestion and amylase that helps with chemical digestion.

Learn how to read a dichotomous key which is used in classification in order to help identify objects.
In this example, I classify 3 monsters. The first thing to remember is to always start at 1A with each new object that you are classifying. Because each question has two parts you should always start at the A question and then the question will tell you where to go next.

If you live in the united states,canada, or Australia, you use a 12 hour system for telling time.
If you look at this clock it is 7 oclock. However is this 7 oclock in the morning or 7 oclock at night. This is where am and pm help
.The 12-hour system divides the 24 hours of a day into two periods lasting 12 hours each. The first 12-hour period is designated as am. It runs from midnight to noon. The second period, marked pm, covers the 12 hours from noon to midnight.
AM comes from the latin phrase ante meridiem, which translates to, before midday)
and p.m. from the Latin phrase post meridiem which translates to, past midday
There are 24 hours in a day, this requires the hour hand to pass the 12 twice.

Learn how to add and subtract using scientific notation