Study: Study Guides

Chemistry

	Periodic Table
	Essential Vitamins
	Omnivore’s Dilemma
	Azodicarbonamide
	COVID-19 Situation in the US
	DEET Insect Repellent Important safety information about the use of insect repellents.

Computing

Animating the Web

	Self-Driving Car – No Libraries A fantastic introduction to Javascript programing, including many important concepts and examples from the fields of math, physics and computer science.
	Leslie Lamport The man who revolutionized computer science with math
	Rafael Animating the Web.
	Random Number Generator Example Javascipt code for a random number generator.
	Converting HTML to PDF on the Command Line Using Google Chrome How to convert HTML TO PDF on the command line using Chromium (Google Crome) as the rendering engine.
	Converting Files in HEIC Format to JPEG Format How to convert those pesky HEIC files into JPEG format.
	Converting Files in HEIC Format to JPEG Format How to convert those pesky HEIC files into JPEG format.
	Am I Viewing Localhost?
	Creative Commons
	Weather Forecast Santa Rosa
	Whiteboard Fi
	Rdiff-Backup Script Using rdiff-backup on macOS
	Rdiff-Backup Script Using rdiff-backup on macOS
	Find Command Find command cheatsheet
	Find Command Find command cheatsheet
	Using Scratch to Increment a Counter in a Range Scratch was originally added to Hugo to get around a limitation of Go templates. Due to advances in Go Templates, Scratch is no longer needed in most situations, but it still works.
	Local Web Server With Python How to spin up a local Python web server from any directory.
	Local Web Server With Python Spin up a local Python Web server from any directory.
	HTML5 Charts in Hugo Thanks to the good work of Shen Yu and a global community of hackers, it is now easy to add fancy charts to Hugo Websites. Here are my first experiments.
	OBS Studio Free and open source software for video recording and live streaming.
	LibreOffice LibreOffice is a powerful and free office suite used by millions of people around the world.
	Gimp
	OEIS TeX Math Symbols
	Working With Taxonomy Templates in Hugo

Ecology

Ecology (from Greek: οἶκος, “house” and -λογία, “study of”) is a branch of biology. Topics include biodiversity and populations of living organisms, dynamics of ecosystems, and the flux of energy and matter through an environment.

	Climate Clock Adding the metric of time to the global warming conversation
	Alexander Von Humboldt
	Global Warming In recent decades, the average global temperature has increased at the fastest rate in recorded history. Climate measurements show this trend accelerating, with all but one of the 16 hottest years in NASA’s 134-year record having occurred since 2000 CE.
	A Future for the World’s Children? As climate and commercial threats intensify, WHO-UNICEF-Lancet Commission presses for radical rethink on child health.
	Air Quality and Smoke Days Major fires are becoming more frequent in California. To fight the onslaught of misinformation, here are important facts on how to project your homes and family.
	The Embarcadero Freeway The Embarcadero Freeway is widely considered one of the most glaring examples of corruption in San Francisco's history. For 32 years, the concrete monstrosity blocked the view of the bay. While all but those who profited from it's construction roundly hated the project, it took an earthquake to break it down.
	Weather Weather is what happens to us. We feel it now. It can change from minute-to-minute, hour-to-hour, day-to-day, and season-to-season.Climate is the average of all weather patterns measured over longer terms of time and space. Denialism are the delusions about climate as promoted at Fox Fools and some other propaganda-manufacturing, for-profit corporations.
	Head Lice Important information on identifying and removing head lice.
	Bear Safety Important safety information about hiking and camping in bear country.

English

	Typing and Keyboarding Learn to type correctly using this simple online game.
	Writing a Persuasive Letter
	Writing an Outline

Games

The Game of Go

The game of Go is simplicity and complexity in one.

Geology

The Home Planet The Earth is our home, and we are a part of the Earth. We rely upon the Earth for our very existence. The Earth’s gifts feed us, provide shelter, and all that we need to survive and thrive. Change Is The Only Constant The Earth is dynamic. It is always changing. Even small changes can have profound influences on humanity and civilization. Understanding the Earth’s systems and how they interact is vital for our survival and wellbeing.

	Formation of Planet Earth Our Milky Way galaxy came together nearly 14 billion years ago when enormous clouds of gas and dust coalesced under the force of gravity. Over time, two structures emerged: first, a vast spherical “halo,” and later, a dense, bright disk. Billions of years after that, our own solar system spun into being inside this disk, so that when we look out at night, we see the Milky Way.
	Layers of Planet Earth The Earth is made of many layers. We live on the outer layer, a thin layer of rock and water floating on an ocean of molten rocks and metals.
	Change and Plate Tectonics
	Time and the Surface of the Earth
	Fire and the Earth Volcanoes have existed for a long time on Earth, and they deserve our greatest respect. They may have caused major planetary disasters, such as the Permian Mass Extinction about 250 million years ago, which may have been the greatest mass extinction on Earth.
	Pele: Goddess of Fire Pele, the Hawaiian Goddess of Fire---like the volcanos she represents---deserves our greatest respect. Hew beauty is awe-inspiring, her moods fiery, and her fury immense.
	Types of Rocks
	Experiment: Growing Salt Crystals Create a supersaturated solution. As the solution becomes unstable, salt crystals will form.
	Crystals Crystals are the outer form of a mineral's inner order. Nearly every piece of rock on Earth is made of minerals, each of which has a precise arrangement of atoms.
	Identifying Rocks To identify a rock, think like a geologist and examine its physical characteristics for clues.
	Fossils
	Minerals and Life We are a part of the Earth, a piece of the whole. Just as our terrestrial planet is made of specific minerals, we are made of the same minerals. Our bodies need many essential minerals to remain healthy. A well-balanced diet can provide all the minerals we need.
	Deep Ocean Vents
	A Pale Blue Dot

History

	Chief Seattle
	Rappler
	Valerie Kaur What if this darkness, is not the darkness of tomb, but the darkness of the womb?! What if our America is not dead, but a country that is waiting to be born? What if the story of our country is one long labor? What if this is our nation's great transition?! Breath! Push! We will breathe... in love, through love. Our revolutionary love is the magic we will show our children!
	Greta Thunberg All we have to do is wake up and change.
	Winston Churchill
	China No one knows for sure how old Chinese civilization is. We do know that it’s one of the oldest civilizations on Earth, and that it is the only one to have existed unbroken from it's earliest beginning into modern times. Legends claim that the first rulers in China were the Xia Dynasty, from around 2100 to 1600 BCE, and that Yu was the first emperor.
	US Fighters in Manchuria Little known facts about US involvement in the Pacific War prior to the Japanese attack on Pearl Harbor.
	Amanda Gorman In order to write, I must have music. Without. Music. I. Can. Not. Write.
	Kamala Harris On March 16, 2021, US Vice President Kamala Harris gave the following speech to the United Nations at the 65th Session of the Commission on the Status of Women.
	The Christmas Truce of 1914
	Who Is Sandy Weill?
	Julia Ward Howe Arise, all women who have hearts!

Mathematics 6

	Sixth Grade Topics
	Equations
	Decimal System
	Squares and Square Roots A headlong plunge into the mighty story of perfect squares and their roots.
	Area in the Coordinate Plane Finding the area of polygons defined by linear equations.
	Danish Hearts
	Metric Measurements
	Metric to US Measurement Conversions
	Prime Numbers
	Rational Numbers (Fractions) Review of fractions.
	Division Long division is useful when a problem is too large or complicated to solve another way. Long division usually takes more time, but it always work.
	Exponents Exponentially advanced multiplication, and its inverses.
	Functions All about relations, functions and sequences.
	Measurements Measure twice, cut once.
	Percents Percent means "out of one hundred".
	Ratios A ratio compares two or more values.
	What Is Mathematics?
	Metric Multipliers
	Islamic Golden Age
	Islamic Mosaic Art
	Prime Numbers
	Subtracting Integers
	The Coordinate Plane
	Hexagons
	Glossary of Mathematics Terms Mathematical terms and definitions.

Mathematics 7

	Equations
	Decimal System
	Squares and Square Roots A headlong plunge into the mighty story of perfect squares and their roots.
	Area in the Coordinate Plane Finding the area of polygons defined by linear equations.
	Metric Measurements
	Metric to US Measurement Conversions
	Multiplying and Dividing Monomials
	Prime Numbers
	Pythagorean Theorem The Pythagorean Theorem is considered one of the most famous mathematical statements, and the fourth most beautiful of all equations.
	Division Long division is useful when a problem is too large or complicated to solve another way. Long division usually takes more time, but it always work.
	Exponents Exponentially advanced multiplication, and its inverses.
	Measurements Measure twice, cut once.
	Percents Percent means "out of one hundred".
	Ratios A ratio compares two or more values.
	What Is Mathematics?
	Metric Multipliers
	Algebra Glossary A monumental and ever-expanding list of vital terms with their definitions.
	7-2-7. One-Step Equations With Rational Numbers
	Comparing, Ordering, Adding, Subtracting Rational Numbers
	Hexagons
	Glossary of Mathematics Terms Mathematical terms and definitions.

Mathematics 8

	8-5-7. Parallel and Perpendicular Lines
	Eighth Grade Topics
	8-5-3. Linear Functions
	8-5-6. Point-Slope Form
	Equations
	Inequalities Overview An utterly unequaled compendium of factoids highlighting the finer points of unequal solutions.
	Solving Inequalities With Variables on Both Sides
	Decimal System
	Slope Ye awesome overview of slopes, mountains, and steep ravines..
	Squares and Square Roots A headlong plunge into the mighty story of perfect squares and their roots.
	Systems of Linear Equations Solving systems of linear equations.
	Area in the Coordinate Plane Finding the area of polygons defined by linear equations.
	Metric Measurements
	Metric to US Measurement Conversions
	Prime Numbers
	Pythagorean Theorem The Pythagorean Theorem is considered one of the most famous mathematical statements, and the fourth most beautiful of all equations.
	Absolute Value Absolutely the best guide you are likely to find covering the essentials of absolute values and their equations.
	Data Visualization All about how to read visual data.
	Exponents Exponentially advanced multiplication, and its inverses.
	Functions All about relations, functions and sequences.
	Inequalities With Multiplication and Division
	Measurements Measure twice, cut once.
	Percents Percent means "out of one hundred".
	Ratios A ratio compares two or more values.
	Review 1: Ready to to On?
	Solving Absolute Value Inequalities
	Solving Compound Inequalities
	What Is Mathematics?
	Flipping Digits These digit flipping challenges are tough at first, but with practice you can become a pro.
	Metric Multipliers
	Phi
	PI
	Algebra Glossary A monumental and ever-expanding list of vital terms with their definitions.
	Glossary of Mathematics Terms Mathematical terms and definitions.

Nursing

Math for nurses

	Common Intravenous Fluids Common terms of intravenous fluids.
	Drug and Dosage Forms Common drug and dosage forms.
	Drug and Solution Measurements Common unit measurements.
	Miscellaneous Terms and Symbols Miscellaneous terms and symbols used by nurses.
	Routes of Drug Administration Routes of drug administration.
	Times of Drug Administration Times of drug administration.
	Unit Conversions Common unit conversions.

Philosophy

	Aldoux Huxley
	Baruch Spinoza Inspired by the philosophy of the ancient Greek Stoics, and in reaction to the materialistic ideas of René Descartes, Spinoza became one of the greatest thinkers of 17th-century European Enlightenment. He contributed greatly to modern biblical criticism, and modern conceptions of the individual in the universe.
	Thich Nhat Hanh
	Obama’s Speech to Students, September 8, 2009 The President gives a speech directly to America's students welcoming them back to school. He emphasizes their hope and potential but makes clear they will need to take responsibility for themselves and their education to reach that potential.
	Martin Luther King, Jr.

Physics 12

The study of the physical properties of sound, light, heat, gravity, fluid dynamics, magnetism and electricity.

Additive Light

The mixing together (or addition) of three primary colors of light with varying degrees of intensity produce a wide range of other colors.

Physics 6

The study of the physical properties of sound, light, heat, magnetism and electricity.

	Propagation of Sound G6
	Sources of Sound G6
	Electromagnetism
	Michael Faraday Michael Faraday was the greatest experimentalist in electricity and magnetism of the 19th century and one of the greatest experimental physicists of all time. He is known as the ‘Father of Electricity’.
	Sources of Heat
	Visible Light
	Sound in Water
	Radiometer
	Expansion and Contraction
	Visible Light
	Speed of Light
	Conduction
	Magnetism
	Static Electricity
	Convection
	Solar Oven
	Spectroscope

Physics 7

The study of the physical properties of sound, light, heat, gravity, fluid dynamics, magnetism and electricity.

	Bicycles
	Sadako Sasaki Sadako Sasaki was two years old on August 6th, 1945 when the United States dropped a nuclear bomb on her home
	Archimedes Archimedes is often considered the world's greatest scientist---certainly the greatest scientist of ancient times.
	Levers There are three classes of levers, depending on where the load and effort are located compared to the fulcrum. Each type of lever has its own uses and advantages.
	Pulleys A pulley is collection of one or more wheels over which a rope is looped. The arrangement makes it easier to move and lift heavy objects.
	Bridge Videos
	Bridges
	Electromagnetism
	The Scientific Method
	Origami Mobile How to make a mobile with origami cranes.
	Six Simple Machines Simple machines are devices with no---or very few---moving parts.
	Sound G7
	Glass Harp
	Doppler Effect
	Radiometer
	Speed of Light
	Lighting
	Metric Multipliers
	Physics Jokes

Physics 8

The study of the physical properties of sound, light, heat, gravity, fluid dynamics, magnetism and electricity.

	Einstein and the Theory of Relativity
	Electromagnetism
	Isaac Newton
	Laws of Motion
	Newton’s Cradle
	Rube Goldberg Cartoons
	Rube Goldberg Machine
	The Four Fundamental Forces of the Universe
	The Pendulum
	The Scientific Method The scientific method is critical to the development of scientific theories. These theories are then used to try to explain the empirical (experiential, observable, measurable) world.
	Discoverers of Electromagnetic Energy
	Michael Faraday Michael Faraday was the greatest experimentalist in electricity and magnetism of the 19th century and one of the greatest experimental physicists of all time. He is known as the ‘Father of Electricity’.
	James Clerk Maxwell Michael Faraday was the greatest experimentalist in electricity and magnetism of the 19th century and one of the greatest experimental physicists of all time. He is known as the ‘Father of Electricity’.
	What Is Sound?
	Speed of Light
	Light Refraction
	Lighting
	Microwaves
	Sound Propagation Sound is all about vibrations. To make a sound, there needs to be a source---something that vibrates---whether it's a musical instrument, the larynx (voice box) of a person, or the movement of Tectonic Plates...
	Electric Switch
	Doppler Effect
	Single and Parallel Circuits
	Electric Motor
	Music
	Magnetism
	Quantum Levitation
	Metric Multipliers
	Physics Jokes

Physics 9

The study of the physical properties of sound, light, heat, gravity, fluid dynamics, magnetism and electricity.