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Some teachers create different categories of grades to place more or less emphasis on certain assignments, or to help you see how you perform in different types of assignments. For example, many teachers believe that tests should have a significant…
Everyone loves seeing birds flitting between feeders in their backyard. Feeders help attract any number of birds to your home, and the pastime of birdwatching can prove to be quite rewarding! If you’re a fan of crafts, and would like…
A table of values is a list of numbers that are used to substitute one variable, such as within an equation of a line and other functions, to find the value of the other variable, or missing number. The first…
The assumed mean takes a ballpark guess at the mean, then uses math to calculate a number close to the mean. It is assumed because it is not an actual mean calculation. It is important to remember that the only…
A grassland is an area covered in large part by grass and other non-woody — that is, not trees — vegetative life. Grasslands occur throughout the world, except for severely cold regions such as Antarctica, and feature several land forms,…
Spectator ions are ions that are present in a solution but don’t take part in a solution’s chemical reaction. When reactants dissociate into ions, some of the ions may combine to form a new compound. The other ions don’t take…
An acid is a compound that donates hydrogen ions when dissolved in water. When it does this, it also releases the ions to which the hydrogens were bound before the compound was put in solution. A hydrogen ion is positively…
The period of the sine function is 2π, which means that the value of the function is the same every 2π units. The sine function, like cosine, tangent, cotangent, and many other trigonometric function, is a periodic function, which means…
AP style is the style guide codified in The Associated Press Stylebook and Briefing on Media Law. AP style is primarily used by journalists and others in the news industry when writing and reporting news stories. However, this very specific…
Fur Color Polar bears are covered with white fur. Their fur does not change color like a chameleon’s skin; however, since they live in a snowy zone they are always surrounded by the color white. They do not need to…
