Seventh graders study geometric shapes around the classroom. In this geometry lesson plan, 7th graders discuss their answers in groups to the Anticipation/Reaction guide handout. Students complete the reaction side of the guide and...

Develop young mathematicians' knowledge of two- and three-dimensional shapes with this geometry workbook. From learning about the classifications of different shapes and figures to calculating their area, perimeter, and volume, this...

What properties does area possess? Solidify the area properties that pupils learned in previous years. Groups investigate the five properties using four problems, which then provide the basis for a class discussion.

Learners research Pythagoras and learn how to apply his theorem. They solve real life problems using the theorem and demonstrate knowledge of exponents, equations, and radicals. Students include diagrams in their research papers.

What makes a color warm, and what makes a color cool? Explore colors and abstract art through an observation activity and an art assignment. Learners look at images and talk about colors before making their own compositions with...

Young artists divide a piece of graph paper into sections using rectangles, squares, and triangles. They then fill each section with patterns of shape and color. Elementary graders describe how their patterns are organized. Secondary...

A square, a rectangle, and a triangle. Help Rita make a house with these shapes. Understand, plan, solve, and look back to check the work.  

As the green squares are removed, a little piece of the puzzle is revealed. What is it? A square, a triangle, a cow? Have your class guess their way to identifying five different plane shapes.

How many of 2-D or plane shapes can your class identify? Can they get them all? Little learners view and review the names of nine different shapes, such as rectangle, square, triangle, and circle, to name a few.

Students investigate the Sierpinski triangle and calculate the ratio and area of the triangle. In this fractals lesson, students calculate parts of a Sierpincki triangle. They use Google Earth to help them construct the different parts...

Students discover that side measurement is used in determining angle classification of a triangle. By squaring sides, they predict whether triangles be right, obtuse, or acute. They prove the Pythagorean Theorem and use it to solve...

Second graders create a shape garden. In this polygons lesson, 2nd graders practice making shapes using a geoboard and read the book The Greedy Triangle by Marilyn Burns.  Students also design a shape garden using construction...

Students work in cooperative groups of three or four to define Egyptian terms and use those terms on pre-cut triangles to create pyramids on oak tag for display. This lesson was originally developed as a follow-up activity for a unit on...

Have your class explore the concept of reflections as they use Cabri Jr. to construct a triangle and reflect it over a line. Learners reflect shapes across the coordinate plane and across the lines y = x and y = -x.

Students identify the six trigonometric ratios and properties. For this trig lesson, students define basic trig functions as it relates to solving right triangles. They identify the equation for sine as o/h and cosine as a/h and tangent...

Students view a video on bridges and domes. They discuss the importance of shapes, especially triangles for these structures. They participate in an activity in which they create their own dome out of paper clips.

Students watch teacher demonstration of distance formula, view non-collinear cities on maps, plot points on coordinate plane, evaluate square roots, compute distance between two points, and use Heron's formula to find area of triangles.

Students measure the perimeter and area of their polygons. In this geometry lesson, students calculate the volume and area using the correct tools. They calculate the time and temperature and the perimeter and side lengths of triangles.

In this triangulation worksheet, students solve and complete 11 steps of an experiment to determine the distance to a far away object using triangulation and trigonometry. First, they select a far away object and create a baseline far...

In this expressions and formulas worksheet, 9th graders solve and complete 7 different types of problems related to various expressions and formulas. First, they define order of operations and explain why it is used. Then, students list...

In this geometry worksheet, 10th graders use the Pythagorean Theorem to determine the length of the third side of a right triangle given the length of any two sides.  The three page worksheet contains a combination of seventeen...

Students produce original tessellations, using equilateral triangles where three unique symmetrical faces rotate, use shape, pattern/repetition, and color to create a striking composition, and create "beasties" inspired by bestiaries of...

Students study and observe the patterns made by the areas of the Sierpinski Triangle. Students use the computer to draw two or three iterations to discover the number patterns. Students complete worksheets based on Geometric Fractals.

Learners use the CABRI application for their graphing calculator to rotate, translate, and reflect triangles. They use graphing calculators and follow detailed directions to manipulate triangles in specified ways. There are three...