Bell work 9/14/15Materials:-Planner-IAN-Pencil/Pen1. What is the scientific method?

2. List 2 experiments you have done using the scientific method.

*Be specific!!

Table of Contents

Date Activity Page #

9/14/15 Scientific Method ??

Update!!!

Scientific Method Song

• http://www.youtube.com/watch?v=MV8lSmIo4Ac

The Scientific Method

Seven steps:1. Choose problem

2. Research problem

3. Develop hypothesis

4. Write procedures

5. Test hypothesis

6. Organize data

7. State conclusions

1. Choose a Problem

• What do you want to learn more about?• Make an OBSERVATION and ask a specific

question • Example: Do plants need water to grow?

Observation vs. Inference

What is an observation?

• When you observe, you become aware of something using one of your senses. – smell, taste, sight, touch, and sound.

• An observation is a statement describing a fact.

Observation

On your OUTPUT page, record 5 observations about this science classroom.

1.

2.

3.

4.

5.

Types of Observations

What is an inference?

• An inference is a statement based on your interpretation of the facts.

• Inferences cannot be directly observed. They require thought. – Example, if you get up in the morning, look up at the sky

and observe dark clouds, observe the air is cool and humid, and observe puddles on the ground, you might infer that it has recently rained. **Note: you did not see rain; you decided that it rained based on your observations.

Examples

Observations

• That plant is extremely wilted.

• The car stopped running

• The Aces are leading their division

Inferences

• That plant is extremely wilted due to a lack of water.

• The car stopped running because it was out of gas.

• The Aces are leading their division because they are playing well right now.

List 3 inferences about the classroom

1.

2.

3.

Another Example• What observations can we make about this picture?

• What can we infer based on this picture?

Let’s test your skills!• Qualitative vs. Quantitative• Observations TEST!

Bell work 9/15/15

1. What are the seven steps of the scientific method? 1. Choose problem

2. Research problem

3. Develop hypothesis

4. Write procedures

5. Test hypothesis

6. Organize data

7. State conclusions

Materials:-Planner-IAN-Pencil/Pen

Let’s test your skills!• Qualitative vs. Quantitative• Observations vs. Inference

2. Research Your Problem• How can you find the

answer to your question?• Research!

– Library– Internet– Adults– Your own background

knowledge!

3. Develop a Hypothesis• What do you think the answer to your

question will be?• Hypothesis- A statement that tries to

explain a relationship between two variables

Still Developing Hypothesis…

• Use the words IF and THEN

• Example:– IF you water a plant more, THEN it

will grow taller.

Controlling Variables• You need to know

exactly what you are testing…

• …You have to control EVERYTHING

• Three different types:1. Independent variable2. Dependent variable3. Control variables

Independent Variable• Independent variable-

– The variable that you are changing or testing

– It will always be the IF portion of your hypothesis

• Example hypothesis:– IF you water a plant

more, THEN it will grow taller

– Water is the independent variable

Dependent Variable• Dependent variable-

– Changes in response to the independent variable

– The variable you are measuring

– It will always be the THEN portion of your hypothesis

• Example hypothesis:– IF you water a plant more,

THEN it will grow taller– Plant height is the

dependent variable

Control Variables• Control variables-

– Variables that are unchanged throughout the experiment

• Example hypothesis:– IF you water a plant

more, THEN it will grow taller

– Controlled variables:• Soil, age of plant, type of

plant, amount of sunlight, etc..

How

How many types of variables are there in an experiment?

Let’s test your skills!• Hypothesis Worksheet

Bell work 9/16/15

Will being in the sun too long without sunscreen cause skin cancer?

1. What is the IV?

2. What is the DV?

Materials:-Planner-IAN-Pencil/Pen

NEXT: Grab a hypothesis worksheet and glue it into IAN on an OUTPUT side… Begin working on it

Skin cancer

Let’s test your skills!• Hypothesis Worksheet• Station Rotation (variables) !!!!

1. Chocolate may cause pimplesIndependent variable: Dependent variable: hypothesis:

2. Salt in soil may affect plant growth.Independent variable: Dependent variable: hypothesis:

3. Plant growth may be affected by the color of the light.Independent variable: Dependent variable: hypothesis:

4. Bacterial growth may be affected by temperature.Independent variable: Dependent variable: hypothesis:

5. Ultraviolet light may cause skin cancer.Independent variable: Dependent variable: hypothesis:

6. Temperature may cause leaves to change color.Independent variable: Dependent variable: hypothesis:

Bell work 9/17/15Materials:-Planner-IAN-Pencil/Pen

3 spruce trees are kept in different humidity levels inside a greenhouse for 4 weeks. 1 spruce tree is left outside in normal conditions. The height of the trees are measured twice a week.1. IV- __________________________2. DV- __________________________3. C- __________________________4. CG- __________________________

Variables

Bell work 9/18/15Materials:-Planner-IAN-Pencil/PenYou decide to clean your bedroom because the

floor is covered with clothes. You try to get rid of the clothes by throwing them into the air. You throw clothes from 1/3 of the room into the closet and a second 1/3 of the room straight up in the air. The last 1/3 of the room you leave the clothes on the floor. 1. IV- __________________________2. DV- __________________________3. C- __________________________4. CG- __________________________

4. Write Procedures• How will you test

your hypothesis?

1. List materials

2. List each thing that you will do• Number each step• Write down

EVERYTHING you will do

• Anyone should be able to replicate your experiment

5. Test Your Hypothesis• Obtain materials• Conduct experiment• Follow your procedure…

exactly• Be sure to control your

variables • Variable-

–Anything that can be changed or manipulated during an experiment

6. Organize Data

6. Organize Data• Organize

data into the following: – Tables– Charts– Graphs

• Draw pictures• Take photos

7. State Conclusions

• What did you see, hear, smell, taste?– Qualitative data

• This baby has perfect teeth

• What does your numerical data show you?– Quantitative data

• This baby has teeth that are 8 cm long

State Conclusions• Decide what your data tells you about your hypothesis• Decide how your hypothesis might change based on your

results• Evaluate your strengths and weaknesses• Communicate your results with others!

Let’s test your skills!• Graphing Worksheet

Bell work 9/21/15Materials:-Planner-IAN-Pencil/Pen1. Take out your “Graphing Skillz”

worksheet and finish it!

Bring your phone to class tomorrow!!!

Let’s test your skills!• Graphing Station Rotation (15 minutes per station)

Bell work 9/22/15Materials:-Planner-IAN-Pencil/Pen1. Take out your “Graphing Skillz”

worksheet and finish it!

Let’s test your skills!• Graphing Station Rotation (15 minutes per station)

Class Dojo

Parent Signature due tomorrow

LAB

What is our dependent variable going to be??

• Class poll

https://www.polleverywhere.com/multiple_choice_polls/d4WfBVx4S0i9xHS

Bell work 9/23/15Materials:-Planner-IAN-Pencil/Pen

LABUpdate Table of contents!

Gummy Lab!!

• Take the Metric Measurements of your specimen! • When you are finished help the rest of your team

Lab Report

• Title: Gummy Bear Lab

• Statement of the Problem (Research): Will the _______ of a gummy bear change when submerged in water for 24 hours?

Lab Write-up

• Hypothesis: (IF, THEN statement)• IF a gummy bear is submerged in water

for 24 hours, THEN the _____ will _____.

– IV: – DV:– Controls:

Amount of Water

________________

Class brainstorming

Bell work 9/24/15 Materials:-Planner-IAN-Pencil/Pen

Test 2

Lab Write-up

• Materials– Small cup– 50mL of water– Graduated cylinder– Triple beam balance– Meter Stick– Calculator– GUMMY BEAR!!!!!!

Lab Write-up• Procedure:

1.Collect the following measurements from your gummy bear. Record your data in the data table (bear color, length, width, thickness, volume, mass, density).

2. Put the gummy bear in a cup labeled with your name and class period on it.

3. Add 50mL of water to the cup and let it sit for 24 hours.

4. On day 2, remove the gummy bear from the water and use a paper towel to dry it off.

5. Repeat the measurements from Day 1 and record your data in the data table.

6. Calculate the amount of change for each measurement and record it in the data table.

7. Return all materials and clean-up your lab station.

LABGo check out your gummy

bear!!!

Bell work 9/25/15 Materials:-Planner-IAN-Pencil/Pen1.Grab a Lab Write-up template

and glue it into IAN (output page opposite your Gummy Lab “Notes”.

2.Read through the worksheet and start thinking about GRAPHING!

3.When you receive TT2, shade in the # you got correct.

LABhttps://

www.youtube.com/watch?v=astISOttCQ0

Lab Write-up

• Results: Data table and Graph

** Graph your results!

-Bar graph (length, width, thickness)

-Title

-Label your X and Y-axis

-A key

-Use a Ruler for a straight edge

Lab Write-up• Conclusion:

Below is a helpful format for writing a conclusion

(additional sentences are encouraged!!)

This lab (experiment) investigated ___________________________.

In order to study the problem we __________________________.

My results showed _________________________________, thus proving my hypothesis was (correct/incorrect).

I believe the results are (accurate/inaccurate) because ____________.

In order to further investigate this problem, next time I would _______.

Length Width Thickness 0

0.5

1

1.5

2

2.5

3

3.5

4

4.5

5

day 1Day 2

Mea

sure

men

ts (

cm)

Gummy Bear measurements on Day 1 and 2

Don’t forget a cover!

Use of Paper Towels

Bell work 9/28/15 Materials:-Planner-IAN-Pencil/Pen

Paper Towel Lab (ideas)

AbsorbencyDurability

Paper Towel Lab Packet

Day 1-Problem-Hypothesis-Materials-Procedure

Bell work 9/29/15Materials:-Planner-IAN-Pencil/Pen-Lab Packet1.What is your groups’ independent

variable?

2.What is your groups’ dependent variable?

3.List the materials you need for today’s lab.

Paper Towel Lab Packet

Day 2

-Experiment-Trail 1

Bell work 9/30/15Materials:-Planner-IAN-Pencil/Pen-Lab Packet

1.How many trials did you complete yesterday?

2.List 2 strengths you had as a group.

3.List 2 weaknesses you had as a group.

Paper Towel Lab Packet

Day 3

-Experiment-Trail 2-Trial 3

Bell work 10/1/15Materials:-Planner-IAN-Pencil/Pen-Lab Packet

1. What type of graph should you use to graph your data?

You will use a bar graph!!

2. What variable goes on your x-axis?The paper towel brands go on the x-axis.

3. What variable goes on the y-axis?What you measured goes on the y-axis.

Paper Towel Lab Packet

Day 4

-Results-Graph-Conclusion

Bell work 10/2/15Materials:-Planner-IAN-Pencil/Pen-Lab Packet

1.Was your group’s hypothesis correct or incorrect?

2.Which paper towel brand is the “best buy”? Explain why.

Paper Towel Lab Packet

Day 5

-Start Final Draft**You will have time to finish in class on Monday.

Bell work 10/5/15Materials:-Planner-IAN-Pencil/Pen-Lab Packet

1. As a class how was your behavior with Ms. Frey? Explain

(1-5… 5=awesome!)

2. As an individual how was your behavior with Ms. Frey?Explain (1-5… 5=awesome!)

Paper Towel Lab Packet

Day 6

-Finish your Final Draft** Study for Target Tests 3-6

-Review Day tomorrow-Target Tests Wednesday

Bell work 10/6/15Materials:-Planner-IAN-Pencil/Pen-Lab Packet

1.Did you test durability or absorbency?

2. Which paper towel should I use at home??

Bell work 10/7/15Materials:-Planner-IAN-Pencil/Pen1. Look back through your Scientific Method

notes/labs.2. Create the chart below and list your strengths

and weaknesses with this unit.

(3 minimum!)

Scientific Method Song

• https://www.youtube.com/watch?v=3q0079P4i8Q