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Conjectures For Intersecting Circles
Students identify properties of circles. In this geometry instructional activity, students identify the center of two intersecting circles.They use Cabri software to create circles and move it around to make observation.
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Circle, Secants
Students identify the secant segment of a circle. In this geometry lesson, students investigate secant lines formed outside the circle. They use Cabri software to create drawings and explore circles and secants.
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Exploring Chords: Products of Chord Segments
Young scholars identify the properties of chords. In this geometry lesson, students multiply chord segments to find the solution to their problem. They construct two chords that cross on a circles.
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Product of Chord Segments
Learners creating chords intersection using circles. In this geometry lesson, students create visuals of chords ad their properties using Cabri technology. They measure the chords and explore the relationship among chords.
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The Search for Pythagoras' Treasure
Pupils identify and define properties of triangles. In this geometry lesson, students identify the missing sides and angles of right triangles. They use the rules of the Pythagorean Theorem to solve their problems.
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Get the Turtle to the Pond
Students solve problems. In this math lesson plan, students write solutions using LOGO commands in order to help get the turtle to the pond.
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Balloon Jets
Learners investigate how fuel amount affects the distance traveled by balloons. In this physics lesson, students collect data and create a pictograph. They interpret data and formulate a conclusion.
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Grade 2: Texas Problem Solving
Second graders use numerical data about Texas to write and solve real-life problems involving addition and subtraction (or multiplication and division). They work in pairs to choose three numerical facts about Texas to use to make up...
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Minerals
Students explore the concept of minerals. In this minerals lesson, students discuss how cooling affects the size of crystals. Students discuss how the structure of minerals is a tetrahedron. Students discuss the structure of silicates...
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Tantalizing Tangrams
Fourth graders participate in what is considered to be a model lesson. The lesson focuses upon polygons and basic geometry. The lesson addresses national standards and displays how others should be done.
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Investigating the properties of a circle
Students use wax paper to look at different properties of circles such as chords, tangent lines, inscribed angles, and inscribed angles in a semi-circle, as well as finding the center of the circle, and use GSP to investigate cyclic...
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Fractions Describe Parts of a Whole
Third graders represent fractions as part of a whole. In this fractions lesson plan, 3rd graders use manipulatives to show how a fraction is a part of a whole. This lesson plan includes individual practice and an assessment instead of...
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The Mandelbrot Set
Students explore the Mandelbrot Set. They are introduced to the concept of a complex number and function in order to motivate the discussion of Julia and Mandelbrot sets. Students investigate fractals and how they are built.
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Translations
Students explore the concept of translations. In this translations lesson, students discuss similarities and differences between images and pre-images. Students apply translations to coordinates of figures. Students use patty paper to...
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Geometry and Symmetry
Students examine tessellations and their geometric properties. The lesson and discussions may be used to develop students' understanding of polygons and symmetry as well as their ability to analyze patterns.
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Estimating Fish Populations
Students describe the mark/recapture method used to estimate fish populations. They explain the importance of being able to predict population numbers.
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Understanding Fractions
Students add and subtract fractions and multiply and divide fractions using pattern blocks.
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Testing Foods
Students perform an experiment using brown paper bags to determine which foods have oil in them. This task assesses student's abilities to make simple observations and inferences from them.
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Cube Models
Sixth graders are introduced to the concepts of area and volume. In groups, they work together to build models of square centimeters in which they are given no instructions. To end the lesson, they record the dimensions of each model...
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Water and Ice
Students explore what happens to water as it goes from solid to liquid and back. In this state of matter lesson, students observe, measure, and describe water as it changes state.
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Virial Theorem Lesson
Ninth graders describe how equilibrium can occur as the balance of two effects. They model the stability of elliptical galaxies based on how fast stars within the galaxy are moving.
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Color Dots 3
Students make simple observations, test mixtures, and make generalized inferences from their observations. They observe bleeding of colored inks with water.
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Irregular Fractals
Students study and research irregular fractals and construct a few based on their research. Students practice pattern recognition skills and plane geometry skills calculating dimensions on the Fractured Pictures activity.
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Triangle Sums
Fourth graders determine a way to place numbers in the nine circles that are arranged in a triangular pattern so that each side has an equal sum. They use each number once and practice adding single digit numbers.