### Basic Lab Techniques

Review the **metric system**, then meet the **lab bench tool of the day: the micropipette**.

### Straight Lines/ Standard Curves

What is** "direct proportionality"**, and how does it relate to your paycheck? How can direct proportionality help you turn a photospectrometer from a boring looking paperweight into a ** useful device for measuring what's in your water**? Extra bonus: Learn all about **Beer ... s Law and how to calculate extinction**.

### Logs and pH

**Logs can help you** get a handle on numbers that are very large or very small, but most people have a hard time remembering how they work. Learn an **easy way** to remember them, and **get some practice estimating logs** of numbers large and small. Discover how scientists use logs to measure real phenomena like the **acidity of oranges (pH scale)** and the **strength of earthquakes (Richter scale)**.

### Calculating Molar Weight

**A mole is a number in chemistry**, but you'd be surprised how many non-chemical moles we can cram into one short module. Meet garden moles, mole rats, and chicken mole, and also learn to **calculate the molecular weight** of caffeine and battery acid. Make the **periodic table** work for YOU!

### The Size of Things

Review and practice **converting** between different metric measurements, then take a tour of the **micro- and nano- worlds**, meeting strange beasts like monstous dustmites and prickly pollen along the way. Get some** practice estimating size visually** in microscope field. Know your beasts: never be embarrassed by overestimating a virus again.

### Hemocytometers

Captain Flint’s Roadside Spectacular Aquarium has fallen into disrepair. It is filled with a single shark, some guppies, and **a whole lot of cyanobacteria** scum. The intern needs to count the cyanobacteria before they start repairs, and to do so, he buys a fancy counting tray called a "**hemocytometer**." Hilarity ensues as intern bickers with boss over **how to use it**.

### Follow the Units (AKA Conversions)

Learn how to **express a number in different units** and convert from one to the other without breaking a sweat, staring at the ceiling, or biting your nails.

### Serial Dilution

How do you count something that runs into the millions or billions? Learn how to estimate the number of bacteria in a sample through **serial dilution, plating, and scaling up**.