1. Experimental Design Turn to page 21 in notebook
Title the page: Experimental Design
September 9, 2009

2. Practice writing a testable question…… What is the effect of _____(IV) on______(DV)?
EX. You have 3 different types of soil and some radish seeds.
What is the effect of different types of soil on the growth of radish seeds?
IV=
DV=
Different types of soil
Growth of the radish seeds.

3. More practice…. Write a testable question and then tell what the IV and DV are…
1. You wonder what surface makes a toy car go the fastest, wood, tile, or carpet?
Question: IV DV
2. You have notebook paper, construction paper, and computer paper and wonder which kind of paper will make the best paper airplane.

4. Practice writing a hypothesis…
If __________, then _____________.
3.What is the effect of fertilizer on plant growth?
4.What is the effect of hand sanitizer on bacteria growth?
5.What is the effect of ramp height on how far a marble will roll?

5. On Page 20, title it: Water Drop Test 9/9/09
Write a testable question for the following:
You wonder which type of coin can hold the most water droplets.
What is the effect of coin size on the number of water droplets it can hold?
IV:
DV:
Coin size
Number of water drops
Hypothesis: If __________________ then _______________________.

6. IV:
Coin Size
Trial 1
(DV)# of drops
Trial 2
Trial 3
Average
Penny
___