1. Walk In…
Take out notebook, agenda, folder, pencil box.
Answer at the back in sentences:
Why is it important to make a hypothesis (prediction) before doing an experiment?

2. Possible Answers
Scientists make a hypothesis or educated guess so they know what they are trying to find out.
By the end of the experiment, they realize their hypothesis was either SUPPORTED or NOT SUPPORTED (not right or wrong).

3. House Cup Challenge
Done on No Explo Days!
Homerooms compete against each other in games or challenges.
Sometimes, we need reps for our team, and sometimes, everyone can participate.
Have fun, support our homeroom, get to know others!

4. Homeroom Name
We need a team name!
Could be “alliterated”, like Ryan’s Renegades or Ryan’s ___
Could be something else!
2 minutes of table discussion, then we vote!

5. The Scientiic Method
Scientists use this method as a set of steps to follow, to do an experiment in a logical way that someone else could duplicate. Let’s follow the steps through this experiment!

6. Does Practice Make Perfect?
Learning objective:
Follow the Scientific Method
as we perform our first experiment!

7. The old saying is… Practice makes perfect
What do you think that means?
What things have you practiced that you have improved on?

8. Practice Makes Perfect
Purpose: Does doing a task over and over improve your ability to perform the task?
THE TASK: In today’s lab, you will be provided a number chart with numbers 1-80 on them but mixed up. You will have to point to the numbers in order. Your goal is to get to the highest number in 1 minute.
You will repeat the experiment 5 times.
The goal of the experiment is to investigate how practice affects performance.

9. Hypothesis Hypothesis:
If I repeat the same task 5 times, then my results will (improve, stay the same, or decline) each time because ______.

10. Variables Independent Variable (what we change):
amount of practice
Dependent Variable (what we measure):
The highest number reached in one minute

11. Variables
Control (what we keep the same to make it a “fair” experiment)
Same number chart each time
Same amount of time to count

12. Procedure Keep the Number Chart face down.
At the teacher’s signal, turn the Number Chart over.
Place your finger on #1, the #2, and so on until time is called (1 minute).
Keep your finger on the last number you reached when the timer went off.
Record the number in your data chart.

13. Number reached in 1 minute
Data Chart
Trial #
Number reached in 1 minute
1st
2nd
3rd
4th
5th

14. Ready to try it?
Ready to count? Wait until you are told to turn your paper over!

15. Graph Trial number X-axis (bottom) – Trial number (1, 2, 3, 4, 5)
Y-axis (side) – Highest number counted
Highest
number
Trial number

16. Conclusion Was your hypothesis supported?
Why or why not? Use data from your chart to answer this question.

17. Conclusion continued
3. What other experiments could you create using this number chart?

18. For Fun See how a distraction affects your results.
Record your time. Number reached with distraction: __________
Set the time to count up.
Find all the numbers from
Record your time Time to reach 100: ___________

19. With Distraction