Rock On! Featuring the Igneous, Sedimentary and Metamorphic Trio!

Rock On!
Featuring the Igneous, Sedimentary
and Metamorphic Trio!
“Sed”
“Iggy”
“Meta ‘M’”
Deborah Cubillos
Meadows Elementary School
The instructional materials were developed as part of the BEST Science Project,
funded by Northrop Grumman Space Technology.
Rock On!
Featuring the Igneous, Sedimentary
and Metamorphic Trio!
The materials developed for this unit are to introduce second grade students to the wonderful
world of geology through rocks. Students will learn the properties of rocks and how to place
them in categories using these properties, as prescribed by the California State Science
Standards. They will learn how igneous, metamorphic, and sedimentary rocks are formed, as
well as understanding that minerals are the most common material from the Earth. Stories will be
read to engage these second graders. Activities will give the students a “hands-on” approach to
their cognitive learning. The use of visuals will help students to relate and appreciate this
wonderful natural resource, the rock. So, Rock On!
TARGETED GRADE LEVEL
The instructional materials are for the second grade students.
CALIFORNIA SCIENCE CONTENT STANDARDS
Earth Sciences
3. Earth is made of materials that have distinct properties and provide resources for human
activities. As a basis for understanding this concept:
a. Students know how to compare the physical properties of different kinds of rocks
and know that rock is composed of different combinations of minerals.
b. Students know rock, water, plants, and soil provide many resources, including
food, fuel, and building materials, that humans use.
Investigation and Experimentation
4. Scientific progress is made by asking meaningful questions and conducting careful
investigations. As a basis for understanding this concept and addressing the content in the
other three strands, students should develop their own questions and perform
investigations. Students will:
a. Students know how to compare the physical properties of different kinds of rocks
and know that rock is composed of different combinations of minerals.
b. Use magnifiers or microscopes to observe and draw descriptions of small objects
or small features of objects.
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STUDENT LEARNING OUTCOMES
1. Students will be able to identify color, texture and size of rocks.
2. Students will record observations and draw conclusions from their observations.
3. Students will be able to describe minerals, and sedimentary, igneous, and metamorphic
rocks.
4. Students will describe the purpose of rocks and where they can be found.
TIME NEEDED
This unit takes four hours to complete. Four one-hour lessons is an appropriate time frame for
this unit.
SCIENCE CONTENT
ROCKS
Minerals by themselves are not the whole story, since they usually combine to form masses
of rock. Minerals are substances that were never an animal or a plant and that were formed in
the earth by nature. Iron, granite, and salt are minerals, as are as quartz or feldspar. They have a
definite chemical composition and usually a definite crystal structure.
Rocks are combinations of various minerals that have been formed by heat or pressure in the
earth. These larger combinations determine how our planet’s crust looks and behaves. Using her
or his knowledge of how rocks are formed can give a geologist a good idea of what that part of
the earth was line in earlier times.
There are three groups of rocks—igneous, sedimentary, and metamorphic. Each of these
grouping includes different varieties of rocks that were created in very different ways.
IGNEOUS ROCK
Igneous means relating to fire. Rocks of this group come into being when molten rock,
known as magma, cools into a solid state and becomes hard. When magma moves to a cooler
area, either under the ground or by breaking onto the surface of the earth as lava, it begins to
harden. This change is from a molten state to a solid state. Magma that hardens under the surface
of the earth is called intrusive rock. Examples of this kind of igneous rock are granite and
gabbro.
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Magma that travels all the way to the earth’s surface through volcano or volcanic vents is
called lava. As the lava cools it becomes what is called extrusive rock. One example of extrusive
rock is rhyolite. It is the extrusive equivalent of granite. Obsidian is another example of extrusive
rock.
SEDIMENTARY ROCK
Nature has a way of making sediments each and every day. Dust blowing through the air and
landing on your doorstep is sediment. A rock that you throw and a piece chips off as it lands is
sediment. Most sedimentary rock is formed under water.
Rocks also get bumped as they roll along at the bottom of a river. The rough edges get
chipped off and settle to the bottom. Dirt from the riverbank or runoff from fields also carries
soil particles into streams and rivers. Some of this sediment travels great distances before it
eventually settles to the bottom of the river or is carried out to the ocean. How can all these
particles turn into rock?
The process may take millions of years as more sediment piling on top slowly buries
sediment. As the pile gets heavier, the particles near the bottom are squeezed closer and closer
together and warmed by the heat of the earth. Under ground water brings new minerals that act
like glue to hold the tiny particles together into sedimentary rock.
Another kind of sedimentary rock is formed when skeletons of tiny sea animals called
plankton fall to the bottom of the ocean. Shells and other sea life also add to this collection on
the ocean floor. All these things piling up on the ocean floor along with the heaviness of the
water creates a squeezing pressure that changes the sediment into hard rock. Minerals that are
dissolved in the water help to cement the sediment together. Sedimentary rocks are often formed
in layers as more and more sediment falls on top of older layers.
METAMORPHIC ROCK
Metamorphism means to change in structure, appearance, and composition. A rock that
changes in its solid state within the earth’s crust is called metamorphic rock. The rock changes
because of change in temperature, pressure, and/or chemical interactions. In nature, great
pressure on rocks causes the temperature to rise. Together, the heat and pressure changes
produce metamorphic rock.
Metamorphic rocks begin as an igneous or sedimentary rock. Metamorphic rock does not
melt, like igneous rock. These are actually baked by the earth’s internal heat causing the
structure to change altogether. Rocks may begin to change even at very shallow depths. Much of
the world’s metamorphic rock was formed billions of years ago when the earth was much hotter
and there was much more tectonic activity, or land movement, causing great pressure on rocks.
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PRE-REQUISITE SKILLS AND KNOWLEDGE
None needed.
GLOSSARY
Properties:
how a thing looks, feels, smells, tastes or sounds
Igneous rock:
rock formed as melted materials cool
Sedimentary rock:
rock formed form layers of sediments that harden
Metamorphic rock:
rock that has changed because of extreme pressure and heat
Mineral:
solid material made of a single substance found in nature
ACTIVITIES
In preparation for this science module, the teacher will prepare a class set of “Rock On!”
workbooks. The template is included at the end of this module.
Activity #1 –The activity begins when the teacher reads, Everybody Needs A Rock by Byrd
Baylor. During this activity, students will view rocks in a new and more global way. Students
look for qualities in rock as they choose one for a pet. They will learn that rocks are not just
something you walk on, they are useful as building materials and they are everywhere in the
world. They will make their first entry in their “Rock On!” workbook by naming and writing a
short story about their new pet rock.
Activity #2 – Students will learn properties of rock and how to categorize them by those
properties as prescribed by the California State Science Standards. This will be accomplished by
exciting interactive group activities using rocks as hands-on. They will make a second entry in
their “Rock On!” workbook while using magnifying glasses for detail information.
Activity #3 – Students will be introduced igneous, sedimentary, and metamorphic rocks through
the book, Let’s Go Rock Collecting, by Roma Gans. Students will draw and describe the
properties of these rocks while looking through a magnifying glass. In this lesson, they will start
their own rock collection.
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Activity #4 – Students will discover that minerals are solid substances found in nature and that
they are the most common material found on the Earth. The book, Minerals, by Adele
Richardson will be read to the students and great graphic pictures will show students where we
can find minerals in everyday life. They will see realia that demonstrate how minerals are used
from building materials to precious stones for jewelry. Students will learn that their birth month
is represented by a mineral. The will make observations in their “Rock On!” booklet.
ASSESSMENT
Assessments can be done informally as students work on their projects.
RESOURCES AND REFERENCES
BOOKS
These are “must have’s” in your classroom library for earth science.
Baylor, Byrd; Everybody Needs A Rock, 1974, Aladdin Paperbacks
Cole, Ron; Remarkable Rocks, 1996, Newbridge Educational Publishing
Dussling, Jennifer; Looking At Rocks, 2001, Grosset & Dunlap
Gans, Roma; Let’s Go Rock Collecting, 1984, HarperCollins
Richardson, Adele; Minerals, 2002, Capstone Press
Richardson, Adele; Rocks, 2002, Capstone Press
Tocci, Salvatore; Experiments With Rocks and Minerals, 2002, Children’s Press
WEBSITES
California Mineral Education Foundation – www.calmineraled.org
National Science Teachers Association – www.nsta.org
RESOURCES FOR ROOM SET UP
The classroom should have an area set up with rock and mineral posters, mineral,
metamorphic, igneous, and sedimentary rock collections, grade level books about rocks and
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minerals and
magnifying glasses.
Building materials,
for example, such as
bricks, copper pipes,
and granite and
marble tiles should
be included to help
students understand
that rocks and
minerals are
common and useful
for many different
things. All of these
resources can be
found at home
improvement centers
(Lowes, Home
Depot), Lakeshore
Learning Company
(www.lakeshorelearning.com) and Acorn Naturalists (www.acornnaturalists.com). Students
should be given the opportunity to explore this area during their free time or during science
center.
ACTIVITY #1 – My Pet Rock
Description Of The Activity
Students will find a rock a their own, give it some eyes and name it after listening to the story
Everybody Needs A Rock, by Byrd Baylor. This activity will motivate the students to appreciate
rocks and how they re used in the world.
Materials Needed For The Activity
Book entitled Everybody Needs A Rock by Byrd Baylor.
Prior to activity, students will find a rock, of any kind, no bigger than their fist and no
smaller than the “O” when they make the “O.K.” sign with their hand.
Prior to the activity, the teacher will prepare the “Rock On!” activity booklet for the
student.
Google eyes, various sizes, 2 per student
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Tacky glue
12/24 pack of colored pencils
Procedures For The Activity
1. Pose a variety of questions to the class to begin the discussion of rocks. Questions can
include the following:
►
Where do we find rocks?
►
What are rocks are used for? (i.e.: roadways, walkways, and bricks).
►
Can we find rocks inside/outside of our houses? (i.e.: tabletops, counter tops, floor tiles,
bathroom tiles, block walls, and patio floors).
►
Are all rocks the same size?
►
What are the smallest rocks you have seen?
►
What are the largest rocks you have seen?
►
Are all rock the same color?
►
Do they all feel the same?
►
Do they weight the same?
2. Read the story Everybody Needs A Rock, by Byrd Baylor.
►
Let students hold the rock that they brought while listening to the story.
►
When the story is finished, ask the students to share about why they picked their rock
over thousands of rocks they could have chosen.
►
Have the students give a name to their rock and glue on the googly eyes (tell the students
their pet must have two eyes…no Cyclopes!)
3. Tell the students can leave their pet on their desk for the remainder of the unit as long as they
do not play with them during other lessons.
4. Introduce the “Rock On” activity booklet and have the students fill in the first page with a
drawing of their new pet, the name of their pet and write a short story about their pet.
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Extension Activity: When you are walking in from recess, have students look around and find,
count, or name things made from rock (i.e. cement on the ground, blocks on buildings, rocks in
planters for decoration, and the asphalt on the street).
STUDENT WORKSHEET #1 – My Pet Rock
Complete pages 2 & 3 of the “Rock On!” workbook (template and instruction
are at the end of this unit)
ACTIVITY #2 – Properties of Rocks
Description Of The Activity
Students will understand the meaning of “Properties” by grouping rocks by color, texture,
and size. Students will explain rock properties by:
1. Color
2. Size
3. Texture/Touch
Materials Needed For The Activity
Four sets of 3” X 5” index cards labeled:
o color
o texture/Touch
o size
o smooth
o full of holes
o rough
o dark color
o more than one color
o light color
o large
o medium
o small
Assortment of rocks – 3
sets of 15 rocks (see
picture at right)
Magnifying glass 1 per
student
Rock On! workbook
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Procedures For The Activity
1. Write on the board, as a heading, the word “properties.”
►
Review with students the discussion from the previous lesson about where we find rocks
in nature, in our home, or outside our home.
►
Ask students, “If we could describe rocks by their properties, what might properties
mean?”
►
Give them a hint: it is using your five senses.
2. List under the word “properties,” see/looks, feel, smells, tastes and sounds.
►
Then jokingly ask, “Should we taste rocks? No! They might break our teeth!
►
Can we hear rock when we place them by our ears? Not really!
►
Do you think you can smell rocks? Some rocks may smell different from others but, the
smell might be our own opinion of good or stinky.”
►
We can use these properties to classify rocks.
3. Write on the board, as a heading, “color” and say, “For example, the property of color, we
can classify the rocks by light color, dark color and more than one color/mixed.”
►
Then list the words light color, dark color and mixed colors.
►
Next, write as a heading, “Texture/ Touch.”
►
Ask the students, “how can these be classified?” and then write rough, smooth, or full of
wholes under the heading.
4. Lastly, write “Size” as a heading and have the class give the answers small, medium or large
as you write these words under the heading.
►
Tell the students that they are going to be Geologists (explain that Geologists are people
who study rocks) they are now going to classify rocks just as Geologists do.
►
Remember to call the students Geologists during the lesson.
5. Divide the class into 4 groups.
►
Give each group a set of labeled index cards, the assortment of rocks and magnifying
glasses. This lesson works well by letting the groups sit on the floor in different areas of
the room.
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►
Have Geologists look at each rock with a magnifying glass and remind them no to touch
the glass with the rock—it may scratch the glass.
►
Tell the Geologists to place the category heading “Color” at the top, and then place the
cards for that category (light, dark, and mixed) to the left.
►
Have the Geologists place the assorted rocks to the right of the corresponding label.
►
Have the students discuss why they placed the rocks where they did.
►
Then put the rocks in a pile to be sorted for the next category.
►
Do this same procedure with the headings “Texture/Touch” and “Size.”
6. In their groups, with rocks in a pile, have the Geologist play “Guess my rock.”
►
Each Geologist will take turns looking at only one rock; they will then describe its
properties to the group and pick someone from the group to guess which rock they are
looking at.
►
Each Geologist will get a turn guessing and describing.
7. Clean up.
8. Have students draw and color a picture of a favorite rock they saw today, they may use the
magnifying glass for better detail and write in the descriptive properties of that rock in their
“Rock On!” workbook.
Assessment For The Activity
The teacher will perform an informative assessment by walking around the room during the
group activity to confirm students have accurately followed the procedures for this activity.
STUDENT WORKSHEET #2 – Properties of Rocks
Complete pages 4&5 in the “Rock On!” workbook
ACTIVITY #3 – Types of Rock Samples
Description Of The Activity
Students will be introduced to minerals, metamorphic, sedimentary, and igneous rocks. The
teacher will read the book, Let’s Go Rock Collecting, by Roma Gans to introduce how each rock
is formed, and how it is used as building materials. Students will also collect rocks for their rock
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collection, draw the rocks, and describe the properties of minerals, metamorphic, sedimentary,
and igneous rocks in their “Rock On!” workbook.
Materials Needed For The Activity
Book entitled Let’s Go Rock Collecting by Roma Gans
Igneous, Metamorphic, Sedimentary Sample/Collection Kits
12/24 pack of colored pencils
1 Magnifying glass per student
“Rock On!” workbook
1 zip lock bag per student with student’s name written in permanent ink, for rock
collection
1 rock of each type (metamorphic, sedimentary, and igneous rocks) for each student.
These can be purchased at a home improvement store in bulk (such as red volcanic rock,
marble, river rocks, granite, and slate/shale). These can used for each student to start
their own rock collection. Each student should have the same rocks. If students are going
on a trip to the mountains, desert or ocean, have them collect rocks (even sand) for each
student to add to the collection. The rocks brought in should be no larger than the circle
part of a child’s hand in the “O.K. sign,” you do not want boulders in your classroom!
Procedures For The Activity
1. Review properties from last lesson by having students explain what properties are and how
we can categorize rocks using these properties.
2. Read the book Let’s Go Rock Collecting, by Roma Gans.
3. After reading the book, go back to page 12, reread about the formation of igneous rocks.
►
Then, have a sample of an igneous rock (obsidian and volcanic red rock or pumice) to
show the students.
►
Discuss the properties of color, texture, and size.
4. Then turn to page 19 and reread about sedimentary rocks.
►
Show students a sample (limestone) and discuss the properties of color, texture, and size.
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5. Lastly, turn to page 26, reread, show a sample of a metamorphic rock (slate and marble) and
discuss its properties.
►
Remind the students that they are still Geologists.
6. Have students turn to the page in their “Rock On!” booklet with word Igneous Rock.
►
Have the Geologists look at an igneous rock through the magnifying glass and then draw,
with detail, what they see.
►
Next, fill in the properties to describe the igneous rock. Do the same procedure for the
sedimentary and metamorphic rock.
7. As they are working on the above activity let each Geologists fill their labeled zip-lock bag
with the each of the rocks that you have brought for their rock collection.
►
Ask them if they remember which type of rock they are.
►
This can be used a formative assessment to see if they were paying attention during the
story.
STUDENT WORKSHEET #3 – Properties of Rocks
Complete pages 6, 7, 8, 9, 10 & 11 in the “Rock On!” workbook
ACTIVITY #4 – What Are Minerals?
Description Of The Activity
Students will discover that minerals are solid substances found in nature. They are the most
common material found on the Earth. The book, Minerals by Adele Richardson will be read to
the students. The illustrations in this book show students where we can find minerals in everyday
life. Students will observe realia that demonstrate how minerals are used from building materials
to precious stones for jewelry. Students will find that a mineral represents their birth month.
Students will record their observations and write in their “Rock On!” workbook.
Materials Needed For The Activity
Book entitled Minerals by Adele Richardson
Birth Month Mineral Chart indicating the minerals that correspond to each calendar
month.
1 Minerals – Sample/collection kit
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1 tube of toothpaste
1 small container of talcum powder
Classroom clock
1 Large graph poster with the birth month minerals written at the bottom and place on the
board to be filled in.
12/24 pack of colored pencils
“Rock On!” workbook
The following items are examples of what the teacher can set on display for the lesson:
Computer parts
Copper pipe
Pennies
Nickels
Gold Jewelry
Vitamins
(The above are to be sitting near you as you read the book)
Procedures For The Activity
1. Review from the previous lesson the terms metamorphic, sedimentary, and igneous.
►
Have the students look at the items setting out.
►
Ask students what they think all of these items have in common.
►
Then tell them they are all made form minerals.
2. Read the book, Minerals, by Adele Richardson.
►
As you are reading, point to the items that are setting near you and how they relate to
minerals.
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►
Have a discussion after each section of the book about the items.
3. Ask students if they know their birth month and if they know which mineral is represented by
that month.
►
Show them the picture of their mineral and birth month (see below).
►
Have them share with a partner the color and name of their mineral.
►
Fill in the graph with student’s birth minerals.
►
Ask which month has the most common mineral?
►
Which month has the least?
►
Using the data from your class, ask how many more are in one month than others?
4. Have students complete their “Rock On!” workbook.
Assessment For The Activity
None needed.
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STUDENT WORKSHEET #4 – What are Minerals?
Complete page 12 of the “Rock On!” workbook
Instructions for printing and assembling the “Rock On!” workbook
1. Print out each page of the workbook.
2. Photocopy the pages as they printed out onto your photocopier tray.
3. Use the back-to-back (OR use the 2-1 feature on your copier).
4. The result should be the first sheet will be pages 12 and 1 and on the reverse side of this sheet
will be pages 2 and 11. The second sheet out of your copier will be 4 and 9 and on the
reverse side will be pages 10 and 3. The third sheet will have pages 6 and 7 on one side and 8
and 5 on the other.
5. Arrange the three sheets on paper in page order and staple the spine (use can use a spine
stapler).
6. Now you have created the “Rock On!” workbook!
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The “Rock On!” workbook begins on the next page
My Birthstone Mineral
Rock
On!
“Iggy”
“Sed”
“Meta ‘M’”
A picture of my birthstone mineral
Color: _______________________
Name of Birthstone: _________________
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By: _______________________
1
Activity #1
My Pet Rock
Properties of Metamorphic
Rock Observed
Color
Light
Dark
Mixed
Size
Small
Medium
Large
Texture / Touch
Smooth
Rough
Full of Holes
Draw a picture of your Pet Rock
2
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Metamorphic Rock:
Is rock that has changed because
of extreme pressure and heat.
My Pet Rock and I will…
________________________
________________________
________________________
________________________
________________________
________________________
________________________
________________________
Draw a picture of a metamorphic rock
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3
My Favorite Rock
Properties of Sedimentary
Rock Observed
Color
Light
Dark
Mixed
Size
Small
Medium
Large
Texture / Touch
Smooth
Rough
Full of Holes
Draw a picture of your favorite rock
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9
Properties of My
Favorite Rock
Sedimentary Rock:
Is rock formed form layers of
sediments that harden.
Color
Light
Dark
Mixed
Size
Small
Medium
Large
Texture / Touch
Smooth
Rough
Full of Holes
Draw a picture of a sedimentary rock
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5
Properties of Igneous
Rock Observed
Igneous Rock:
Is rock formed as melted materials
cool.
Color
Light
Dark
Mixed
Size
Small
Medium
Large
Texture / Touch
Smooth
Rough
Full of Holes
Draw a picture of an igneous rock
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