Curated OER
Pythagorean Theorem
In this Pythagorean theorem worksheet, learners use the Pythagorean theorem to find the length of a missing side of a right triangle. This two--page worksheet contains 15 problems.
Curated OER
Trigonometry Homework
In this right angles worksheet, students use trigonometric ratios to determine the length of a missing side or a missing angle of a right triangle. This two-page worksheet contains 19 problems.
Curated OER
Area of Shapes
In this area of shapes worksheet, students determine the area of equilateral triangles, acute triangles, and compound figures. This one-page worksheet contains 3 multi-step problems. Answers are provided with this interactive worksheet.
Curated OER
I. M. Pei and the Geometry of the NGA
Learners compare design elements in neoclassical and modern architecture. They review knowledge of triangles and quadrilaterals and design a geometric pattern using Pei's polygons They create a city plan using a variety of lines and...
Curated OER
Three- and Two- Dimensional Geometry
In this three- and two- dimensional geometry worksheet, 7th graders solve 12 various problems related to geometric shapes and measurement. They first use paper and a pencil to sketch the front, side, back, top and bottom views of each...
Curated OER
Measurement
In this measurement worksheet, 7th graders solve 14 various types of problems that include completing a table with the base, height, and/or area of triangles and solving a number of word problems with measurement. They also estimate the...
Curated OER
Geometric Shapes
In this recognizing characteristics of shapes instructional activity, students identify characteristics of quadrilaterals, triangles, and parallelograms and determine which sets fall under the same category. Students solve four problems.
Curated OER
Areas of States - Estimation
Young scholars estimate the area of states using the formulas for the areas of rectangles, squares, and triangles. In this geometric shapes instructional activity, students divide irregular shaped states into shapes. They use the...
Curated OER
What is Fire?
Students conduct an experiment. In this fire instructional activity, students view an experiment where they learn the conditions needed to keep a fire burning. Students discuss the experiment and learn about the fire triangle.
Curated OER
Pythagorean Theorem Homework
In this Pythagorean Theorem worksheet, students solve 3 short answer problems. Students use the Pythagorean Theorem to find the length of a triangle's hypotenuse.
Curated OER
Altitudes and Orthocenters: Making Connections to the Nine-Point Circle
Young scholars practice various equations for constructing nine-point circles for triangles.
Curated OER
Toe to Toe Geo
Students study triangles. In this triangle lesson plan, students compare and classify triangles while milling to music. Students will also trade triangles so they can match up with other similar triangles. Triangles are provided.
Curated OER
Triangle Challenge
In this triangles worksheet, students identify and name 3 different types of triangles. First, they determine the number of right triangles in the figure shown on the sheet. Then, students determine the number of equilateral triangles...
Curated OER
Triangle Review
In this triangle activity, learners draw the type of triangles described, 4 total. Space is provided for student's drawings. A reference web site is given for additional activities.
Curated OER
Triangle Practice
In this triangle instructional activity, students trace and color various triangles. Other shapes are included; students must also determine which shapes are triangles.
Curated OER
Circles and Triangles: Sun
In this coloring shape worksheet, learners trace the circles and color them yellow. Students trace the triangles and color them orange. Learners then trace the circle and triangle at the bottom of the page.
Curated OER
Shapes and Colors: Triangles and Ovals
In this shape and color activity, students trace triangles coloring them brown, then trace ovals and color them pink. Students also trace and pictures of a ice cream cones made of triangles and ovals.
Inside Mathematics
Hopewell Geometry
The Hopewell people of the central Ohio Valley used right triangles in the construction of earthworks. Pupils use the Pythagorean Theorem to determine missing dimensions of right triangles used by the Hopewell people. The assessment task...
Willow Tree
Common Geometric Figures
Geometry could be called the study of figures. An overview of the figures found in a typical geometry course contains a study of different triangles, quadrilaterals, and regular polygons.
Concord Consortium
Divisions
Divide and conquer the geometry problem. Young scholars consider how to subdivide triangles into smaller ones that have equal areas. They must apply their knowledge of medians to help accomplish the task.
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...
Mathematics Vision Project
Module 5: Modeling with Geometry
Solids come in many shapes and sizes. Using geometry, scholars create two-dimensional cross-sections of various three-dimensional objects. They develop the lesson further by finding the volume of solids. The module then shifts to finding...
Illustrative Mathematics
Are They Similar?
Learners separate things that just appear similar from those that are actually similar. A diagram of triangles is given, and then a variety of geometric characteristics changed and the similarity of the triangles analyzed. Because the...
Willow Tree
The Pythagorean Theorem
There isn't a more popular geometry formula than the Pythagorean Theorem! Learners understand the special side relationships in a right triangle. They use the Pythagorean Theorem to find missing sides and to solve problems. They begin...
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