Science

The Scientific Method:

Lesson 2:The Scientific

Method(bag experiment)

The BIG Question:

How do scientists attempt to explain our

world?

Why do the leaves change color in the fall?

What causes the leaves to drop from a tree?

The BIG Question:

What are the steps

scientists use to find answers

to their questions?

TheScientif

icMethod

Step 1:

What will happen if I poke a pencil through a full bag of water?

Step 2: I think…

What will happen if I poke a pencil through a full bag of water?

I think…

Step 3:

1. Fill a small plastic bag with water and seal it.2. Slowly poke a pencil through the bag.

Step 4:

1. Fill a small plastic bag with water and seal it.2. Slowly poke a pencil through the bag.

No water leaked from

the bag!

Step 5:

No water leaked from

the bag!

The pencil made a hole that was only wide enough for the pencil to fit through. There was no extra space around the pencil for the water to leak out.

Sum it up!

What did you learn today?

The BIG Question:

What are the steps

scientists use to find answers

to their questions?

Make a hypothesis.

Ask a question.

Design and performthe experiment.

Record and analyzethe data.

Draw a conclusion.

Step 1

Step 2

Step 3

Step 4

Step 5

hypothesis

analyze

record

perform

data

conclusionobserve