Concepts:
- Every object around you is made up of mass.
- Mass is made up of matter.
- Matter is made up of little particles called atoms.
Principles:
- Everything that has mass and takes up space is matter.
- Atoms are the building blocks of matter.
- Atoms are very, very small.
Facts:
- Matter is everything that takes up space.
- The desk you sit at in school is matter.
- The food you eat at home is matter.
- Even the air you breath is matter, because it takes up space,
even if you do not see it!
A balloon gets bigger when you blow into it. This shows you
that air takes up space.
- All matter is made up of little bits called atoms.
- There are many different types of atoms.
- To be able to form all the different objects and things, atoms
mix together to make different kinds of combinations.
- Atoms are very small.
- You cannot see them with a magnifying glass.
- You cannot even see atoms with most microscopes.
- Scientists use special tools to be able to "guess" what atoms look
like.
- They do experiments to understand how atoms behave with each
other.
- They also use a special microscope called an electron microscope that gives them ideas of what
atoms look like.
Skills:
- Making Observations
- Making Comparisons
- Making Inferences
- Drawing Conclusions
- Communicating Observations and Findings
Materials:
- Large covered box or container so you cannot see inside of it.
- Various items (pine cones, rocks, leaves, etc.)
- Drawing paper and something to put the paper on to draw.
Room Preparation:
- Note: this lesson could be done outside or indoors.
- When children complete the lesson, have them sit in a circle so all
can see, hear, and share discussions.
Safety:
- Do not use sharp or pointy objects inside the box, because children
could hurt themselves when touching them.
Procedures and Activities
Introduction:
Ask children the guiding questions:
- Have you ever wondered what everything is made of?
Listen to the children give their ideas. Then, introduce them to
the concept of mass.
- What is mass?
Listen to the children and their ideas. Then, introduce them to
the concept of matter and atoms.
- What are atoms, and how can scientists guess what atoms look
like?
Again, listen to the children and their ideas. It is up to you
whether to give them the exact answer to this question before or
after the lesson is completed. Some children might understand the
definition better after the lesson is done. On the other hand,
some children might feel more comfortable if they are told the
purpose of the lesson first.
- Let's be scientists today!
If you do decide to tell the children the purpose of the lesson
first, tell them that they are going to be scientists today. You
are going to guess the name of objects by touching them and tossing
them around. Like scientists, you are going to guess what they are
by the way they behave.
Activity:
- Make a box.
- Make a covered box with a hole in the top, or side, so that the
children can reach into the box easily to feel the objects
inside.
- Choose mystery objects
Choose three quite different objects to place in the box: a pine
cone, a leaf, and a piece of bark, etc. (If you are working
indoors, you might choose other objects.)
- You may take the children to the location where you found the
objects in the box.
Scientists often have to use many clues to understand something.
By going to the locations of where objects in the box were found,
we are giving you some extra clues beyond just touching the
objects.
- Take turns feeling the objects inside the box so that objects shift
and change for each child. Then have them reach in and feel each
object.
- Make observations like a scientist.
Ask each child to think about what they feel. Are the objects
hard, soft, smooth, rough, etc.?
- Document your observations like a scientist.
Ask the children to describe what they are feeling and jot it down.
Also, ask them to draw what they think that the object looks
like.
- Guess like a scientist.
Ask them to find objects outside of the box that they think may be
the same as those inside the box.
Evaluation
Back in the classroom, ask again:
- Have you ever wondered what everything is made of?
- What is mass?
- What are atoms, and how can scientists guess how atoms look like?
Give a small review of what was talked about before the activity. Let
them share their drawings and observations and compare each other's
guesses. At this time, take the objects out of the box. Let them
compare their observations to what was really inside the box.
Tell them again how scientists are able to guess what atoms look
like, even if they are not able to see them. Compare the activity to
what scientists do. Help them notice that what they had just done, in a
way, is the same thing that scientists do to see and understand
atoms.
Extension Ideas:
- If possible, get some 3-D model kits which demonstrate how atoms
bond together. Maybe they can create their own compounds.
- Conduct experiments about mixing solutions so they can see how
atoms react with other atoms.
- Maybe the children would like to know what atoms are made of. The
linked diagram shows the
particles that an atom is made of.
Careers Related to Lesson Topic:
Astrophysicist
Chemist
- Tour
- U of M Chemistry Department
- Wizard - Ed Burton,
Whiz-Bang Chemistry
Chemical Engineer
- Tour -
U of M Chemical Engineering
Physicist
Prerequisite Vocabulary
- atoms:
- One of the tiniest particles of any material or element.
- electron microscope:
- Instrument in which a beam of electrons is used to create a big
picture of a very small object.
- mass:
- A clump or bulky amount of matter.
- matter:
- A substance that has weight and takes up space.
- microscope:
- Instruments using small magnifying glasses to make the image of
a small object larger for us to see.