| Eighth Grade
Understand and Use the Pythagorean
Theorem
- G.GS.08.01 Understand at least one proof
of the Pythagorean Theorem; use the Pythagorean Theorem
and its converse to solve applied problems including
perimeter, area, and volume problems.
- Figure
This! Math Challenges for Families
Figure This! Mathematics Challenges for Families
provides interesting math challenges that middle-school
students can do at home with their families. Each
challenge features a description of the important
math involved, a note on where the math is used
in the real world, a hint to get started, complete
solutions, a "Try This" section, additional relational
related problems with answers, questions to thinks
about, fun facts related to the math, and resources
for further exploration. Math Challenges #3 and
4 are examples of problems that would help teach
this particular objective.
- Math.Com
(Geometry)
An informational site for teachers and students.
There is some interaction for students in the
lessons. Students can participate in quizes
at the end of each section. This is the
general site for geometry. You will need
to choose the area of interest. Great site
for middle school geometry.
- Proof of the Pythagorean Theorum New
This site
has an excellent animation for a proof of the
Pythagorean Theorum.
- Shape
Explorer
Students can interact with area and perimeter
on various shapes. Students will enjoy interacting
with various shapes and observing how perimeter
and area are both calculated and relate.
- Soda
Constructor
This is a very interactive site in which the students
will have the opportunity to actually construct
shapes. The teacher must give directions of what
shape the students are to construct and the teacher
can also request the shape to be something that
represents something in our physical world.
- G.LO.08.02 Find the distance between two
points on the coordinate plane using the distance
formula; recognize that the distance formula is an
application of the Pythagorean Theorem.
- Count
On
Worm Hunt is great for practicing the coordinate
grid. The students choose a coordinate pair
to try to find a worm. They get a response
to let them know how far they are from the worm,
thus the students have to practice figuring distances
between points on the grid. This would be
an excellent game for 5th and 6th graders.
- Distance Formula New
This site has clear and
concise information on the distance formula
- Interactive Distance Formula New
This site has
an interactive distance formula tool.
- Latitude,
Longitude, and Mapmaking
This lesson requires students to review the concepts
of latitude and longitude and to use these concepts
to create maps of different countries on the computer.
They'll conclude by discussing the reasons why
it's
important to understand latitude and longitude
and by creating quizzes in which other students
can
locate "mystery" places that they map on the computer.
The Crack the Code activity has students using
a
map and latitude/longitude to track down some theives.
- Taxicab
Treasure Hunt
A treasure is hidden in the city. Students are given
a map which shows the streets of the city. After
picking an intersection, the computer will state
how far it is to the treasure by using the shortest
distance in blocks. Students need to use this new
information, along with the old information, to
determine where the treasure is. Students are then
asked to write an explanation of the process that
they used to locate the treasure. Although this
explanation cannot be submitted to the creators
of the site, the teacher could informally assess
students' problem-solving skills by reading their
explanations. Student can also read what other students
have written in the past.
Solve Problems About Geometric
Figures
- G.SR.08.03 Understand the definition of
a circle; know and use the formulas for circumference
and area of a circle to solve problems.
- Circles New
This site has clear and concise
information about circles.
- Converting
from One Unit of Measurement to Another
This activity is part of Project SkyMath: module
Section 2, Activity 6. In this activity students
describe how units of measure are mathematically
related and develop formulas for converting between
units of measure.
- From
Corner to Corner
Students are supplied with an on-line ruler and
must use it to measure the side of a square and
a diagonal. Students then need to analyze the
data to develop a rule for estimating the length
of the diagonal given the length of the side without
actually measuring the length. Students then need
to consider if the rule would work for other shapes.
They also need to reflect on their rule and submit
a short explanation of why it works. (This could
also be extended to include the Pythagorean Theorem.
- Geometry
This is a good site for reviewing basic geometric
terms, shapes and shape relationships. It includes
animations and some interactivity.
- Geometry
from the land of the Incas - Pentagons & Pentagrams
- This dynamic geometry software provides an
environment in which we can explore geometric
relationships and make test conjectures. The
site also has a section on Geometry Theorems
and Problems and quizzes in other areas mathematics
- Geometric
Terms
This is a concentration type game, where the student
has to match up the term to the proper definition.
The geometric definitions and terms are excellent
for refreshing and practice.
- Learning
about Length, Perimeter, Area, and Volume of Similar
Objects
Students experiment with different ratios of side
lengths to interpret the changes in perimeter,
area, surface area, and volume. They use
their data from perimeter and area to make a line
graph and then interpret the reasons for differences
in the graphs. They also create tables to
organize and easily analyze their volume and surface
area data to study the relationship between changes
in length in both volume and surface area.
- Math.Com
(Geometry)
An informational site for teachers and students.
There is some interaction for students in the
lessons. Students can participate in quizes
at the end of each section. This is the
general site for geometry. You will need
to choose the area of interest. Great site
for middle school geometry.
- MATHO
Fun way to allow students to review geometry terms.
Students may need some simple direction before
they begin. Several versions of the game board
available.
- More
Tangram Activities
Students will use tangram pieces to complete the
following objectives: gain a better understanding
of area without formulas, compute the area of
polygons by decompostion, gain familiarity with
the names of certain polygons (e.g., rectangle,
trapezoid, and pentagon), learn the meaning of
the term "similar", and will develop geometric
intuition.
- Native
American Geometry
This site describes who Native Americans used
geometry is creating there artifacts. Could
be used as a lesson in Social Studies as well.
Several other links are included. Go to
education and then hexagon parts.
- Paper
Pool Games
This site allows the student to interact directly
with the activity. It is a review of rectangular
patterns, beginning skills on gathering data and
looking for patterns.
- Quadrilateral
Quest
Students assess their skills at matching quadrilaterals
with their properties. This is a student interactive
site that also includes a quiz.
- Sorting
Activities for Polygons
In this activity, students identify and classify
polygons according to various attributes.
- Surface
Area and Volume
An interactive site for students to compare surface
area and volume of different prisms. Student
worksheet and teacher lesson plans are included.
- Waldo's
Interactive Math Site
This interactive site allows students to manipulate
lines, angles and triangles to discover some basic
geometric rules. The site is easy for students
to use and allows students to discover the rules.
- G.SR.08.04 Find area and perimeter of complex
figures by sub-dividing them into basic shapes (quadrilaterals,
triangles, circles).
- Bathroom
Tiles
Outstanding
- Students use an interactive game to perform
transformations using reflections and rotations.
Three levels of activities are given as well as
solutions and hints.
- Constructing
Your Own Set of Tangrams
Directions for constructing your own tangram.
Extension activities with the pieces are available
in which students will produce other shapes (http://forum.swarthmore.edu/trscavo/tangrams/activities.html)
and gain a better understanding of area (http://forum.swarthmore.edu/trscavo/tangrams/area.html)
with out formulas. These activities seem to be
all linked together.
- Finding the Area and Perimeter of Complex Figures New
This is a video on finding the area and perimeter
of complex figures.
- From
Corner to Corner
Students are supplied with an on-line ruler and
must use it to measure the side of a square and
a diagonal. Students then need to analyze the
data to develop a rule for estimating the length
of the diagonal given the length of the side without
actually measuring the length. Students then need
to consider if the rule would work for other shapes.
They also need to reflect on their rule and submit
a short explanation of why it works. (This could
also be extended to include the Pythagorean Theorem.
- Inversions
by Scott Kim
This site has several examples of symmetry using
inversions of people's names. It contains
teacher lesson plans as well as several examples
of various symmetries and unusual tesselations.
- More
Tangram Activities
Students will use tangram pieces to complete the
following objectives: gain a better understanding
of area without formulas, compute the area of
polygons by decompostion, gain familiarity with
the names of certain polygons (e.g., rectangle,
trapezoid, and pentagon), learn the meaning of
the term "similar", and will develop geometric
intuition.
- Welcome
To Symmetry
This unit is designed to recognize the MCTM Curriculum
and Evaluation Standards for School Mathematics
concerning the need to give increased attention
to "Coordinate and Transformation Approaches in
Geometry at the secondary level. The lesson also
demonstrates increased attention to: The active
involvement of students in constructing and applying
mathematical ideas; the use of a variety of instructional
formats; and the use of computers for learning
and doing mathematics. This has links to
teacher resources and a student page dealing with
symmetry (rotational, reflectional, translational).
- World
of Escher
This is a commercial site selling MC Escher tesselations.
It would be useful as a reference and has many
examples of his art as well as those sent in by
others. Check out "gallery" for Escher's
work and "contest" for other people.
- G.SR.08.05 Solve applied problems involving
areas of triangles, quadrilaterals, and circles.
- Figure
This! Math Challenges for Families
Figure This! Mathematics Challenges for Families
provides interesting math challenges that middle-school
students can do at home with their families. Each
challenge features a description of the important
math involved, a note on where the math is used
in the real world, a hint to get started, complete
solutions, a "Try This" section, additional relational
related problems with answers, questions to thinks
about, fun facts related to the math, and resources
for further exploration. Math Challenges #3 and
4 are examples of problems that would help teach
this particular objective.
- From
Corner to Corner
Students are supplied with an on-line ruler and
must use it to measure the side of a square and
a diagonal. Students then need to analyze the data
to develop a rule for estimating the length of the
diagonal given the length of the side without actually
measuring the length. Students then need to consider
if the rule would work for other shapes. They also
need to reflect on their rule and submit a short
explanation of why it works. (This could also be
extended to include the Pythagorean Theorem.
- Geometry
This is a good site for reviewing basic geometric
terms, shapes and shape relationships. It includes
animations and some interactivity.
- Geometry
from the land of the Incas - Pentagons & Pentagrams
This dynamic geometry software provides an environment
in which we can explore geometric relationships
and make test conjectures. The site also has a section
on Geometry Theorems and Problems and quizzes in
other areas mathematical.
- Geometric
Terms
This is a concentration type game, where the student
has to match up the term to the proper definition.
The geometric definitions and terms are excellent
for refreshing and practice.
- Learning
about Length, Perimeter, Area, and Volume of Similar
Objects
Students experiment with different ratios of side
lengths to interpret the changes in perimeter, area,
surface area, and volume. They use their data
from perimeter and area to make a line graph and
then interpret the reasons for differences in the
graphs. They also create tables to organize
and easily analyze their volume and surface area
data to study the relationship between changes in
length in both volume and surface area.
- Math.Com
(Geometry)
An informational site for teachers and students.
There is some interaction for students in the lessons.
Students can participate in quizes at the end of
each section. This is the general site for
geometry. You will need to choose the area
of interest. Great site for middle school
geometry.
- MATHO
Fun way to allow students to review geometry terms.
Students may need some simple direction before they
begin. Several versions of the game board available.
- More
Tangram Activities
Students will use tangram pieces to complete the
following objectives: gain a better understanding
of area without formulas, compute the area of polygons
by decompostion, gain familiarity with the names
of certain polygons (e.g., rectangle, trapezoid,
and pentagon), learn the meaning of the term "similar",
and will develop geometric intuition.
- Native
American Geometry
This site describes who Native Americans used geometry
is creating there artifacts. Could be used
as a lesson in Social Studies as well. Several
other links are included. Go to education
and then hexagon parts.
- Paper
Pool Games
This site allows the student to interact directly
with the activity. It is a review of rectangular
patterns, beginning skills on gathering data and
looking for patterns.
- Quadrilateral
Quest
Students assess their skills at matching quadrilaterals
with their properties. This is a student interactive
site that also includes a quiz.
- Shape
Explorer
Students can interact with area and perimeter on
various shapes. Students will enjoy interacting
with various shapes and observing how perimeter
and area are both calculated and relate.
- Soda
Constructor
This is a very interactive site in which the students
will have the opportunity to actually construct
shapes. The teacher must give directions of what
shape the students are to construct and the teacher
can also request the shape to be something that
represents something in our physical world.
- Sorting
Activities for Polygons
In this activity, students identify and classify
polygons according to various attributes.
- Surface
Area and Volume
An interactive site for students to compare surface
area and volume of different prisms. Student
worksheet and teacher lesson plans are included.
- Waldo's Interactive
Math Site
This interactive site allows students to manipulate
lines, angles and triangles to discover some basic
geometric rules. The site is easy for students to
use and allows students to discover the rules.
Understand Concepts of Volume
and Surface area, and Apply Formulas
- G.SR.08.06 Know the volume formulas for
generalized cylinders ((area of base) x height), generalized
cones and pyramids ( ?? (area of base) x height),
and spheres ( ?? π (radius) 3 ) and apply them
to solve problems.
- Cones New
This site has clear and concise information
about cones.
- Cylinders New
This site has clear and concise
information about cylinders.
- From
Corner to Corner
Students are supplied with an on-line ruler and
must use it to measure the side of a square and
a diagonal. Students then need to analyze the
data to develop a rule for estimating the length
of the diagonal given the length of the side without
actually measuring the length. Students then need
to consider if the rule would work for other shapes.
They also need to reflect on their rule and submit
a short explanation of why it works. (This could
also be extended to include the Pythagorean Theorem.
- More
Tangram Activities
Students will use tangram pieces to complete the
following objectives: gain a better understanding
of area without formulas, compute the area of
polygons by decompostion, gain familiarity with
the names of certain polygons (e.g., rectangle,
trapezoid, and pentagon), learn the meaning of
the term "similar", and will develop geometric
intuition.
- Pyamids New
This has clear and concise information
about pyamids.
- Spheres New
This site has clear and concise
information about spheres.
- G.SR.08.07 Understand the concept of surface
area, and find the surface area of prisms,
cones, spheres, pyramids, and cylinders.
- Geometry
This is a good site for reviewing basic geometric
terms, shapes and shape relationships. It includes
animations and some interactivity.
- Geometry
from the land of the Incas - Pentagons & Pentagrams
- This dynamic geometry software provides an environment
in which we can explore geometric relationships
and make test conjectures. The site also has a
section on Geometry Theorems and Problems and
quizzes in other areas mathematics
- Geometric
Terms
This is a concentration type game, where the student
has to match up the term to the proper definition.
The geometric definitions and terms are excellent
for refreshing and practice.
- Learning
about Length, Perimeter, Area, and Volume of Similar
Objects
Students experiment with different ratios of side
lengths to interpret the changes in perimeter, area,
surface area, and volume. They use their data
from perimeter and area to make a line graph and
then interpret the reasons for differences in the
graphs. They also create tables to organize
and easily analyze their volume and surface area
data to study the relationship between changes in
length in both volume and surface area.
- Math.Com
(Geometry)
An informational site for teachers and students.
There is some interaction for students in the lessons.
Students can participate in quizes at the end of
each section. This is the general site for
geometry. You will need to choose the area
of interest. Great site for middle school
geometry.
- MATHO
Fun way to allow students to review geometry terms.
Students may need some simple direction before they
begin. Several versions of the game board available.
- Native
American Geometry
This site describes who Native Americans used geometry
is creating there artifacts. Could be used
as a lesson in Social Studies as well. Several
other links are included. Go to education
and then hexagon parts.
- Paper
Pool Games
This site allows the student to interact directly
with the activity. It is a review of rectangular
patterns, beginning skills on gathering data and
looking for patterns.
- Quadrilateral
Quest
Students assess their skills at matching quadrilaterals
with their properties. This is a student interactive
site that also includes a quiz.
- Sorting
Activities for Polygons
In this activity, students identify and classify
polygons according to various attributes.
- Surface Area New
This site has clear and concise
information about surface area.
- Surface Area New
This site has clear and concise
information about surface area.
- Surface
Area and Volume
An interactive site for students to compare surface
area and volume of different prisms. Student
worksheet and teacher lesson plans are included.
- Waldo's Interactive
Math Site
This interactive site allows students to manipulate
lines, angles and triangles to discover some basic
geometric rules. The site is easy for students to
use and allows students to discover the rules.
Visualize Solids
- G.SR.08.08 Sketch a variety of two-dimensional
representations of three-dimensional solids including
orthogonal views (top, front, and side), picture views
(projective or isometric), and nets; use such two-dimensional
representations to help solve problems.
- A
Review of Basic Geometry: Space the Final Frontier
Planes, Cylindric solids/surfaces, Conic solids/surfaces,
Spheres, Platonic Solids, Archimedian Solids, Pentominoes,
Symmetry, Views, and Nets, Map Coloring, and Link
to Flatland.
- Cool
Math
Middle school problem solving activity to construct
non congruent triangle in a dot grid. More
of an activity to do off line. You print out
a sheet of dots. You can't create them online, although
solutions are given.
- Exploring
Geometric Solids andTheir Properties
- Outstanding
Geometric solids are all around us.
This site starts out by explaining the parts of
a solid and gradually builds to constructing similar
solids.
- Figure
This! Math Challenges for Families
Figure This! Mathematics Challenges for Families
provides interesting math challenges that middle-school
students can do at home with their families. Each
challenge features a description of the important
math involved, a note on where the math is used
in the real world, a hint to get started, complete
solutions, a "Try This" section, additional relational
related problems with answers, questions to thinks
about, fun facts related to the math, and resources
for further exploration. Math Challenges #3 and
4 are examples of problems that would help teach
this particular objective.
- Geometric
Constructions
The purpose of this web site is to give students
complete directions for using The Geometer's Sketchpad®
software to construct the basic geometry constructions
encountered in an introductory geometry course.
Each sketch is followed by an interactive Java applet.
Try dragging various points in the sketch to explore
additional cases. The Geometer's Sketchpad®
software is available from Key Curriculum Press.
Angles, Circles, Inscribed-Circumscribed , Lines,
Polygons, Triangles.
- Geometry
from the land of the Incas - Pentagons & Pentagrams
- This dynamic geometry software provides an environment
in which we can explore geometric relationships
and make test conjectures. The site also has a
section on Geometry Theorems and Problems and
quizzes in other areas mathematics.
- Learning
about Length, Perimeter, Area, and Volume of Similar
Objects
Students experiment with different ratios of side
lengths to interpret the changes in perimeter, area,
surface area, and volume. They use their data
from perimeter and area to make a line graph and
then interpret the reasons for differences in the
graphs. They also create tables to organize
and easily analyze their volume and surface area
data to study the relationship between changes in
length in both volume and surface area.
- Math.Com
(Geometry)
An informational site for teachers and students.
There is some interaction for students in the lessons.
Students can participate in quizes at the end of
each section. This is the general site for
geometry. You will need to choose the area
of interest. Great site for middle school
geometry.
- MathsNet
Interactive Geometry - Solids
Outstanding!
This interactive site includes a variety of activities
to cover solid geometry. Level of difficulty and
topic can be changed by the user.
- Shape
Explorer
Students can interact with area and perimeter on
various shapes. Students will enjoy interacting
with various shapes and observing how perimeter
and area are both calculated and relate.
- Soda
Constructor
This is a very interactive site in which the students
will have the opportunity to actually construct
shapes. The teacher must give directions of what
shape the students are to construct and the teacher
can also request the shape to be something that
represents something in our physical world.
- Surface
Area and Volume
An interactive site for students to compare surface
area and volume of different prisms. Student
worksheet and teacher lesson plans are included.
Understand and Apply Concepts
of Transformation and Symmetry
- G.TR.08.09 Understand the definition of
a dilation from a point in the plane, and relate it
to the definition of similar polygons.
- A
Fractals Unit for Middle School Students
This site is for kids. It teaches them about dimension
of objects and the drawing and measuring of them.
Also congruent, parallel and perpendicular lessons.
- About
a Line and a Triangle
This site is about rotation of a line around a
fixed point. This is a student activity.
- Classification
of Patterns
This site contains a complete lesson plan which
could be used to introduce geometric transformation.
A teacher's guide and some reproducible materials
are included. Some of the lesson could be done
in and interactive manner on the computer.
- Dilation New
This site has an excellent animation
for dilation.
- Dilations
An interactive site to experiment with
dilations.
- Interactive
Transformations
This site allows the student to interact with
the computer to discover the difference between
translations, rotations, and reflections.
It also allows them to make an object larger and
do a combination of transformations.
- Learning
About Length, Perimeter, Area and Volume
The student learns about length, perimeter, area,
and volume of similar objects using interactive
figures. This site contains two different interactive
components. These activities help the students
to learn about geometric relationships among similar
objects.
- Math.Com
(Geometry)
An informational site for teachers and students.
There is some interaction for students in the
lessons. Students can participate in quizes
at the end of each section. This is the
general site for geometry. You will need
to choose the area of interest. Great site
for middle school geometry.
- Math
Files - Bathroom Tiles
Outstanding
- This is a student game where students
need to decide how to rotate, reflect, and translate
one object to another object. Students can get
hints from the computer and can click on "key
ideas" to learn more about the various transformations.
This is a very interactive site for students.
- Math
Forum
This sight gives detailed explanations of tessellation,
using history, vocabulary of geometric shapes
and the use of symmetry. There are several
other links of tessellations including software
information.
- MathsNet
Interactive
- This site includes a variety of activities
and information that cover reflections, enlargements,
rotations and translations. Activities increase
in difficulty so the site is actually appropriate
for a wide range of grade levels.
-
- NCTM
Translations,Reflection,TransformationsInteractive
Site that reviews Reflections, Transformations,
and Translations. Students can see the shape
go through theses topics.
- Quilts
Students have to decide which type of symmetry
is used in a quilt and then replicate that quilt
by clicking on the appropriate squares. Because
the different types of symmetry used are denoted
by H, M, S, and B, this is probably best used
in grades 5-6. Teachers should teach students
the correct transformational language. This activity
involves spatial visualization.
- Symmetries
and Their Properties
- This "Illuminations" site describes
and illustrates rotational symmetry, reflections,
translations, and glide reflections. Although
the investigation is coded for grades 9 - 12
this is appropriate and applicable for Middle
School.
- The
Mathematics of Seminole Patchwork
This site provides background information on the
symmetry of the designs contained in the Seminole
Patchwork. Examples and explanations of the types
of transformations that are used in the designs
are given. An excellent resource for integrating
art, history, and multicultural mathematics.
- Waldo's
Interactive Math
This interactive sites includes an activity allowing
students to manipulate practice reflections and
rotations on a coordinate plane. It allows for
practice and/or testing of skills. Some teacher
direction may be needed initially although the
directions are clear. This site uses JAVA applets.
- G.TR.08.10 Understand and use reflective
and rotational symmetries of two-dimensional shapes
and relate them to transformations to solve problems.
- A
Fractals Unit for Middle School Students
This site is for kids. It teaches them about dimension
of objects and the drawing and measuring of them.
Also congruent, parallel and perpendicular lessons.
- About
a Line and a Triangle
This site is about rotation of a line around a fixed
point. This is a student activity.
- Classification
of Patterns
This site contains a complete lesson plan which
could be used to introduce geometric transformation.
A teacher's guide and some reproducible materials
are included. Some of the lesson could be done in
and interactive manner on the computer.
- Dilations
An interactive site to experiment with dilations.
- I
Took a Trip on a Train
Students are shown an overhead view of a circular
train track as well as photos "taken" from the train's
perspective. They must put the photos in chronological
order. This deals with different perspectives
and positions as related to time.
- Interactive
Transformations
This site allows the student to interact with the
computer to discover the difference between translations,
rotations, and reflections. It also allows
them to make an object larger and do a combination
of transformations.
- Learning
About Length, Perimeter, Area and Volume
The student learns about length, perimeter, area,
and volume of similar objects using interactive
figures. This site contains two different interactive
components. These activities help the students to
learn about geometric relationships among similar
objects.
- Math.Com
(Geometry)
An informational site for teachers and students.
There is some interaction for students in the lessons.
Students can participate in quizes at the end of
each section. This is the general site for
geometry. You will need to choose the area
of interest. Great site for middle school
geometry.
- Math
Files - Bathroom Tiles
Outstanding
- This is a student game where students
need to decide how to rotate, reflect, and translate
one object to another object. Students can get hints
from the computer and can click on "key ideas" to
learn more about the various transformations. This
is a very interactive site for students.
- Math
Forum
This sight gives detailed explanations of tessellation,
using history, vocabulary of geometric shapes and
the use of symmetry. There are several other
links of tessellations including software information.
- MathsNet
Interactive - Transformations
This site includes a variety of activities and information
that cover reflections, enlargements, rotations
and translations. Activities increase in difficulty
so the site is actually appropriate for a wide range
of grade levels.
- Math
to Build On
This page provides links to information on the same
website. There are lessons on parallel, perpendicular,
collinear, and more. Good general site for geometry.
This site contains teacher lesson plans.
- NCTM
Translations,Reflection,TransformationsInteractive
Site that reviews Reflections, Transformations,
and Translations. Students can see the shape go
through theses topics.
- Quilts
Students have to decide which type of symmetry is
used in a quilt and then replicate that quilt by
clicking on the appropriate squares. Because the
different types of symmetry used are denoted by
H, M, S, and B, this is probably best used in grades
5-6. Teachers should teach students the correct
transformational language. This activity involves
spatial visualization.
- Reflective Symmetry New
This site has an excellent
animation for reflectional symmetry
- Rotational Symmetry New
This site has an excellent
animation for rotational symmetry.
- Stem
and Leaf Plots
Stem and leaf plots explained.
- Stem
and Leaf Plots
Stem and leaf plots explained.
- Stem
and Leaf Plots
Stem and Leaf Plots that build and compare the line
plot of the data set to the stem-and-leaf plot.
- Symmetries
and Their Properties
This "Illuminations" site describes and
illustrates rotational symmetry, reflections, translations,
and glide reflections. Although thei nvestigation
is coded for grades 9 - 12 this is appropriate and
applicable for Middle School.
- The
Mathematics of Seminole Patchwork
This site provides background information on the
symmetry of the designs contained in the Seminole
Patchwork. Examples and explanations of the types
of transformations that are used in the designs
are given. An excellent resource for integrating
art, history, and multicultural mathematics.
- Waldo's Interactive
Math
This interactive sites includes an activity allowing
students to manipulate practice reflections and
rotations on a coordinate plane. It allows for practice
and/or testing of skills. Some teacher direction
may be needed initially although the directions
are clear. This site uses JAVA applets.
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