A short example problem showing how to calculate the period of a simple pendulum.

# Todd Helmenstine

Law of Cosines example problems showing how to derive the law and how to use it to find the lengths of the sides or angles of a triangle.

## Law of Cosines Example Problem

This collection of neon colored periodic table wallpapers are a great way to have a dark themed wallpaper and include useful information.

## Neon Colored Periodic Table Wallpapers

The law of sines is a useful rule showing a relationship between an angle of a triangle and the length of the side opposite of the angle. These two example problems show how to use this law to find angles and sides of a triangle.

## Law of Sines Example Problem

This geology word search contains 30 geology glossary terms and is a great introduction for students along with a bit of fun added to the mix.

## Geology Word Search

This cell biology word search is a great way to introduce cell biology glossary terms while enjoying a great word search puzzle.