Curated OER
Polygon Perimeters
Students complete worksheets where they calculate the perimeter of polygons. For this perimeter of polygons lesson plan, students divide complex shapes into simple shapes to find the perimeter.
Curated OER
2-D Polygons
Students investigate the concept of two dimensional polygons. They complete a vocabulary chart with the teacher or in independently. Students are shown various polygons in order to classify them and then asked to draw one of them from...
Curated OER
Cutting Up in Class, Fractal Style
Students create three-dimension models demonstrating exponents, multiplying and dividing of fractions, and the use of repeating patterns in tessellations, mirror images, and tiling.
Curated OER
Dilations of 2 and 3 dimentional figures and their effect on area, surface area, and volume.
Seventh graders investigate the area and volume of 2D and 3D figures. In this geometry lesson, 7th graders create a storyboard explaining their knowledge of 2D and 3D shapes. They analyze their data and interpret their results.
Curated OER
Sort It Out and Match It Up
Young scholars identify objects that are the same shape and size. They compare and contrast attributes of two-and three-dimensional objects using appropriate vocabulary. Pupils justify an extension of a geometric pattern to explain...
Noyce Foundation
Parallelogram
Parallelograms are pairs of triangles all the way around. Pupils measure to determine the area and perimeter of a parallelogram. They then find the area of the tirangles formed by drawing a diagonal of the parallelogram and compare their...
Noyce Foundation
Which is Bigger?
To take the longest path, go around—or was that go over? Class members measure scale drawings of a cylindrical vase to find the height and diameter. They calculate the actual height and circumference and determine which is larger.
Curated OER
A World of Symmetry
Students identify lines of symmetry. In this symmetry lesson, students create objects and identify their lines of symmetry. They answer questions about lines of symmetry. Students cut shapes out of cookie dough and decorate it to...
Curated OER
Classifying Polygons
Seventh graders participate in a polygon hunt. In this polygon lesson plan, 7th graders examine how polygons are alike and different. Students create a Venn diagram and label the sorting circles. Students work in cooperative groups to...
Curated OER
Intro to Geometry
Seventh graders identify a polygon and classify them using congruent sides and number of edges and vertices. Students transform two dimensional objects into three dimensional objects.
Curated OER
Tessellations: Use Right Angles To Explain The Tessellation of Objects
Young scholars examine a selection of shapes and identify which shapes tessellate and why. They design and make a pattern which involves translation, reflection, or rotation. Students describe the features of 2-dimensional and...
Curated OER
Area graphics for 7th graders
Students randomly select dimensions for three geometric shapes (square, right triangle and circle). From the graphs they compare and contrast the graphical results of each shape.
Curated OER
They're Everywhere! They're Everywhere!
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.
Youth Education Services
Relating Volume in 3D Objects with Ten Problems
A fabulous four-page assignment explores volume formulae for rectangular prisms, cylinders, cones, and pyramids. Pupils apply the formulas to solve problems, match diagrams to values, and address real-world scenarios. A detailed answer...
Illustrative Mathematics
Overlapping Squares
The objective of this activity is to find the percent of the area of a two squares overlapping. Mathematicians find the ratio of area for the part that overlaps to the rectangle formed. The final answer is a percent as a rate per 100....
Curated OER
Volume, Surface Area for Rectangular & Triangular Prisms
Seventh graders explore the concept of rectangular and triangular prisms. In this rectangular and triangular prism lesson, 7th graders identify various prisms as triangular or rectangular. Students discuss the various shapes of bases...
Curated OER
Spaced Out
The students are able to use a formula to calculate the volume of cuboids by measuring the length of each of the three dimensions. They also investigate the relationship between milliliters and cubic centimeters.
Curated OER
More of Carrie's Cubes
Students solve a word problem that explores the shape of a cube and ways that part of it can be colored. They discuss the problem and analyze a Rubik's cube, explore the problem using a graph, and discuss the solutions as a class.
Curated OER
Geometry Institute Lesson
Students practice geometry skills. In this geometry lesson, students find the surface area of cubes and prisms, identify shapes on solids, and distinguish between 2-dimensional objects and solids.
Curated OER
Tangram Perimeters
Students work together to make figures out of tangram squares. In groups, they calculate the measurements they need and apply the Pythagorean Theorem. They complete a worksheet solving equations using the theorem and review their answers.
Curated OER
The Trapping of Trapezoids
This is a nice hands-on activity where young geometers create trapezoids and calculate their area by looking at areas of quadrilaterals and triangles.
Curated OER
Examining Geometric Solids
Students explore geometry by completing a math worksheet in class. In this shape identification instructional activity, students identify the characteristics associated with 15 solid geometric shapes. Students identify patterns between...
Curated OER
Geometry in Tessellations
Students examine tessellations and their geometric properties. Students explore the concept of tessellations and lines, planes, angles, and polygons. Students experiment with the area and perimeter of polygons. Students analyze...