So…ya wanna be a scientist?Well…labs are whazz up yo!

Okay, so why do we do “labs?” Well, cuz we’re trying to support or refute a hypothesis. DUH!That’s called…

A CONTROLLED EXPERIMENT!Let’s do one…shall we

Warm this up please1. How do we test a valid scientific

hypothesis?2. What are three types of variables

that scientists use in that thing that was the answer to #1?

3. Which of the variables is there only one of and why?

Figure this out…pleaseWe have three types of soil…A, B, & C.Each group will be using a different soil.We are gonna measure how much growth there

is.Soooo…

1. What question are we trying to answer?2. How are we going to try to answer it?3. What materials will we need to do this?4. Can we do this safely?In school…this stuff is provided for you…in real life…nope!

A Few ?’s Before We Start1. What question are we trying to answer?2. What is our manipulated/independent

variable?3. What is our responding/dependent

variable?4. What are three controlled variables that

we will have?5. What units will we be using if we

measure length, mass, and volume?

What Does a Hypothesis Look Like?Good Question…glad you askedI think that soil____ will be the most effective

in growing this type of grass because it contains more_____than ___ or____.

_____ is important to plant growth because it helps them to_______.

What to do…step-by-step1. You will get a sock, bring it to your partner and

decorate it.2. Put a small graduated cylinder on the electronic

balance. Read the mass of the cylinder. Add 5 grams of grass seed to the cylinder.

3. Pour the seeds into the bottom of your sock.4. Put three x 100cc beakers of soil into the sock. Be

sure you write down whether you used soil A, B, of C.

5. Make as many qualitative and quantitative observations as you can.

6. Place the sock in the designated tray.

Okay, so now…Read the directions and we’ll go through

them step-by-step.SAFETY WILL ALWAYS BE THE #1

PRIORITY!If you don’t understand what to do…ask!