Lesson Plan
Curated OER

Exploring the Orthocenter of a Triangle

For Teachers 9th - 12th Standards
Young mathematicians explore the concept of triangles as they construct altitudes of triangles to find the orthocenter. Learners construct their triangles using Cabri Jr. on their graphing calculators and find that the altitudes of a...
Lesson Plan
Texas Instruments

What's the Trig?

For Teachers 9th - 12th Standards
Learners determine the trigonometric relationships within a triangle as they construct a right triangle on the Ti-89. They find the sine, cosine, and tangent of various angles of their triangle construction.
Worksheet
Curated OER

The Histogram

For Students 9th - 11th
In this Algebra I/Algebra II worksheet, students construct and analyze histograms to develop a visual impression of the distributions of data.  The two page worksheet contains five problems.  Answer key is provided. 
Lesson Plan
Curated OER

Where has Polly Gone?

For Teachers 4th - 6th
Students explore polygons and their uses in careers. They also discover polygons shapes in manmade objects and nature. They use their acquired knowledge to construct a strong structure using polygon shapes.
Lesson Plan
Curated OER

Surface Areas of Prisms, Pyramids and Cylinders

For Teachers 7th - 8th
Learners identify and use appropriate formulas to find surface areas of solid figures, practice using formula sheet to solve textbook problems, construct solid figures of given surface area using TABS+ software program, and use Internet...
Lesson Plan
Curated OER

EASY AS PUMPKIN PIE

For Teachers 5th - 6th
Students demonstrate place values using pumpkin seeds as a math manipulative. They use manipulatives, models, known facts, properties and relationships to explain thinking processes. They estimate the number of seeds in their pumpkin.
Lesson Plan
Curated OER

Polygon People

For Teachers 6th - 8th
Learners identify polygons.  In this polygon people lesson, students draw required shapes and construct a polygon person.  They identify each shape and its characteristics.  The lesson may be extended by allowing learners...
Lesson Plan
Curated OER

Lego Robotics: Measuring Speed

For Teachers 3rd - 6th
Students build and program a LEGO robotic car as well as measure and graph its speed. They acquire familiarity with principles of construction, motion, design and problem solving. They compare a robot's speed over two different surfaces...
Lesson Plan
Curated OER

Cabri Jr. Perpendicular Bisector of a Chord

For Teachers 9th - 12th Standards
Your learners will construct the perpendicular bisector of a chord. They use Cabri Jr. to construct a circle and a perpendicular bisector of a chord. They then measure lengths of the chords and perpendicular bisectors. Learners use...
Lesson Plan
Curated OER

Using Cabri Geometry to Create Fractals

For Teachers 9th - 12th Standards
Learners construct the Sierpinski Triangle using Cabri Jr. They use a step-by-step guide to construct the Sierpinski Triangle on their graphing calculator and then discuss the formula for constructing a nth stage Sierpinski Triangle.
Lesson Plan
Curated OER

A New Set of Numbers

For Teachers 6th
Sixth graders add and subtract positive and negative integers. In this integers math lesson, 6th graders review the number line as a class, with students representing the numbers and moving in a positive or negative direction to find...
Lesson Plan
Curated OER

Parachutes, Circles and Pi...Oh My!

For Teachers 6th - 7th
Students explore different size circles to discover the relationship between diameter and circumference. In this circles and Pi lesson, students construct simple parachutes using circle patterns of varying sizes. Students predict the...
Lesson Plan
Curated OER

Percents: What's the Use

For Teachers 6th - 8th
Middle schoolers research percentages in real world situations. For this percents lesson, students demonstrate their ability to apply percents to everyday situations. Middle schoolers communicate mathematically by conducting interviews...
Lesson Plan
Curated OER

Cookie Topography

For Teachers 3rd - 6th
Young scholars construct a cross section diagram showing elevation changes on a "cookie island." Using a chocolate chip cookie for an island, they locate the highest point in centimeters on the cookie and create a scale in feet. After...
Lesson Plan
Curated OER

Scaling Down the Pyramids

For Teachers 6th - 8th
Students construct three-dimensional models of the three pyramids at Giza. They research the building of the pyramids and record the height, base and angle measurements of each pyramid. They create a file of facts regarding the pyramids.
Lesson Plan
Curated OER

Create-A-Town Simulation

For Teachers 2nd - 4th
Students design and construct a model town. In this community lesson, students will collaboratively build a small town from construction paper and toys.
Worksheet
Curated OER

Practice Exam Part 1: Vocabulary

For Students 4th - 6th
In this geometry worksheet, students practice constructing a variety of graphs with various degrees of vertices. Students determine whether 12 graphs have an Euler circuit or path.
Lesson Plan
Curated OER

Making Molecular Models

For Teachers Pre-K - 6th
In these creative hands-on activities, learners construct several different molecular models that represent substances that play an essential role in our nutritional needs. Using gum drops and toothpicks, students design the models....
Lesson Plan
Curated OER

They're Everywhere! They're Everywhere!

For Teachers 7th - 12th
Students gain an appreciation of the polygons and polyhedrons around them that make their world one of order and strength. They build polygons and polyhedrons, and then construct airplanes out of polygons.
Lesson Plan
Curated OER

Polluting the Environment

For Teachers 4th
Fourth graders construct mini-ecosystem, pollute the ecosystem, observe, collect, and record data on the effects of these pollutants on their ecosystem, organize data on spreadsheets, create graphs, and design presentations to share with...
Lesson Plan
Curated OER

Mapping the Ocean Floor

For Teachers 4th - 12th
Students construct and interpret a line graph of ocean floor depth and a bar graph comparing the height/depth of several well-known natural and man-made objects and places. In addition, they calculate the depth of two points using sonar...
Lesson Plan
Curated OER

Equations of Circles

For Teachers 9th - 12th Standards
Using Cabri Jr. students construct a circle and determine the equation of the circle they drew by finding the center and the radius. Students use the distance formula to derive the equation of their circle.
Lesson Plan
Curated OER

Perpendicular Bisector Theorem

For Teachers 9th - 12th Standards
High schoolers construct perpendicular bisectors using Cabri Jr. on their graphing calculator. They then construct conditional statements about perpendicular bisectors along with their converse, inverse, and contrapositive.
Lesson Plan
Curated OER

Similar Triangles and Proportions

For Teachers 9th - 12th Standards
Pupils investigate similar triangles and proportions as they make conjectures about the length of sides of similar triangles. For this lesson plan, have your class construct similar triangles using Cabri Jr so that they share a common...

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