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Lesson Plan
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Multiplying with Packages and Letters

For Teachers 3rd - 4th
Students explore multiplication. In this multiplication problem solving lesson, students view a video clip which demonstrates loading a truck with packages.  Students fill in a blank array to represent 1"X 2" and the multiples when...
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Worksheet
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Multiplication: One and Two Digit Numbers

For Students 3rd - 6th
In this multiplication worksheet, students multiply one digit numbers by two digit numbers and three digit numbers. Students complete 28 problems.
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Worksheet
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Solving Equations with Variables on Both Sides

For Students 7th - 10th
In this solving equations worksheet, students solve 15 equations with variables on both sides of the equal sign. Students are encouraged to check all solutions.
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Worksheet
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Adding and Subtracting Integers

For Students 7th - 12th
For this adding and subtracting integers worksheet, students find the sum or difference of 9 problems. Students then evaluate 4 expressions given certain values.
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Lesson Plan
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Working with larger arrays

For Teachers 5th
Fifth graders use arrays to show the meaning of multipication in selected situations. They practice using large and small arrays. The lesson has numerous activities, which gives students more opportunities to display academic growth.
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Lesson Plan
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Integer Algebraic Addition

For Teachers 7th - 10th
Learners use algebra tiles to solve linear equations with integer solutions. In this algebra lesson plan, students use the additive inverse and the zero pair concept.
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Lesson Plan
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Simplify Expressions

For Teachers 5th - 6th
In this simplifying expressions worksheet, learners simplify a set of 10 expressions. A reference web site is given for additional activities, answers including on page 2.
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Lesson Plan
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Pyrotechnics

For Teachers 3rd - 6th
Students discuss pyrotechnics and what they have noticed about their height and speed. They think about the path which fireworks follow which is a parabola. They follow multiplication patterns to determine the Zero Product Property and...
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Lesson Plan
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Troublesome Towers

For Teachers 8th - 10th
Young scholars observe solids and identify parts that make up the surface area. In this geometry lesson, students calculate the surface are of solids and cones. They find polygons and solids in the real world.
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Lesson Plan
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Finding the Area of a Parallelogram with Translations

For Teachers 8th - 10th
Learners calculate the area of a parallelogram. In this geometry lesson, students perform translation using a coordinate plane and coordinate pairs. They perform translation on other polygons.
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Worksheet
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Complex Numbers

For Students Higher Ed
In this complex numbers worksheet, students simplify 9 problems involving the addition, subtraction, multiplication, and division of complex numbers.
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Lesson Plan
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Transforming Univariate Data

For Teachers 9th - 12th Standards
Learners analyze plotted data in this statistics lesson. They differentiate between skewed and normal data. They also explore and interconnect exponential growth and decay as it relates to the data.
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Lesson Plan
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2.0 "Water Is Life" Global Water Awareness Mini-Unit (Grades3-5)

For Teachers 3rd - 6th
Students study the amount of potable water on the Earth. In this water lesson, students examine the amount of potable water as compared to all the water on the Earth. They discuss why many parts of the world do not have access to good...
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Lesson Plan
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Quadrilateral Explorations

For Teachers 9th
Ninth graders identify quadrilaterals and label the vertices of quadrilaterals. they justify their identification of the quadrilaterals. Students work in groups to identify and create quadrilaterals
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Lesson Plan
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Exploring the Circumcenter of a Triangle

For Teachers 9th - 12th Standards
High schoolers construct the circumcenter of a triangle. In this constructing the circumcenter of a triangle lesson plan, students construct a triangle using Cabri Jr. High schoolers draw perpendicular bisectors of the sides of the...
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Lesson Plan
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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...
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Lesson Plan
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Quadrilateral Explorations-Grade Nine

For Teachers 9th
Ninth graders investigate quadrilaterals.  In this geometry lesson, 9th graders examine and classify quadrilaterals using the slope, midpoint and distance formulas.  Additionally, students create various quadrilaterals given three point...
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Lesson Plan
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Anything I Can Do You Can Do Better

For Teachers 6th - 8th
Students complete a two-week unit involving design and construction concepts. They watch a PowerPoint presentation about geometric shapes, draw the fourteen shapes incorporated in bridge construction, and in small groups design, build,...
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Lesson Plan
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Midsegments of Quadrilaterals

For Teachers 9th - 12th Standards
High schoolers explore the concept of quadrilaterals as they find the midsegments of quadrilaterals using Cabri Jr. on a graphing calculator. They find midpoints, slopes, angles, and distances of lines and angles.
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Lesson Plan
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Constructions Triangles

For Teachers 10th Standards
Learners explore the difference between a construction and a drawing. They focus on various ways to construct different types of triangles. The lesson is an application of Cabri Jr. and reinforces the difference between a constructions...
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Lesson Plan
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How many isosceles triangles can you find?

For Teachers 7th
Seventh graders recognize the characteristics of isosceles triangles. In this isosceles triangle lesson, 7th graders use geoboards to create isosceles triangles. Students record results and explain why they have an isosceles triangle.
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Worksheet
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Precalculus Exam

For Students 11th - 12th
In this precalc lesson, students write out definitions, identify functions, solve integrals and derivatives and graph trig functions as they relate to angles. This is a final exam for precalculus. There are 80 questions on this exam.
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Lesson Plan
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Circumscribing a Circle About a Triangle

For Teachers 9th - 12th Standards
Pupils circumscribe a circle about a triangle. They construct a triangle using Cabri Jr and then circumscribe it. They then use knowledge of perpendicular bisectors and circumcenters to locate the center of the circle and then...
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Lesson Plan
Curated OER

Inscribing a Circle in a Triangle

For Teachers 9th - 12th Standards
Pupils investigate inscribing a circle in a triangle. They use Cabri Jr. to draw a triangle, locate the incenter, and use the distance from the incenter to a side of the triangle to inscribe a circle. The dynamic nature of the geometry...

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