Worksheet
Curated OER

Area and Perimeter of Triangles

For Students 5th - 6th
In this area/perimeter learning exercise, students find perimeter and area of 6 given triangles. An answer key is included on page 2.
Worksheet
Curated OER

All Around Triangles and Quadrilaterals

For Students 4th - 6th
In this triangle/quadrilateral worksheet, students use a centimeter ruler to draw triangles and quadrilaterals with given perimeters. Answers are included on page 2.
Worksheet
Curated OER

Perimeter Word Problems

For Students 4th - 6th
In this perimeter instructional activity, students complete a set of 10 short word problems that define certain measurements and ask for perimeter. A reference web site is given for additional activities.
Worksheet
Curated OER

Bermuda Triangle: Map Activity

For Students 4th - 5th
In this Bermuda triangle worksheet, students complete a set of 4 questions using a given map of the Bermuda triangle. Answers are included on page 2.
Worksheet
Curated OER

Area and Perimeter of Various Shapes

For Students 5th - 6th
In this area and perimeter worksheet, students find each for 6 given shapes. A website reference for additional resources and an answer key are provided.
Worksheet
Curated OER

Use Formulas for Perimeter

For Students 4th - 6th
In this perimeter formula instructional activity, students solve a set of 6 word problems related to the perimeter of various shapes, then tell how they arrive at the answer.
Lesson Plan
Curated OER

Investigating the Sierpinski Triangle

For Teachers 9th - 11th
Students solve and analyze the sierpinski's triangle. In this geometry lesson, students identify properties and theorem of triangles. They solve problems involving angles and sides of triangles.
Lesson Plan
Curated OER

The Minimal Distance Point from the Vertices of a Triangle

For Teachers 9th - 10th
Students calculate the distance from the vertex of a triangle to the center. In this geometry lesson, students find the shortest distance between a point and the vertex of a triangle. They relate this concept of distance to the real world.
Worksheet
Curated OER

Find the Area

For Students 10th
In this find the area worksheet, 10th graders solve and complete 18 different types of problems. First, they find the area of a figure with consecutive sides. Then, students find the area and perimeter of a square shown. They also find...
Worksheet
Curated OER

Similar Polygons

For Students 10th
In this similar polygons worksheet, 10th graders solve 10 different problems that include determining various similar polygons. First, they determine the perimeter of a second triangle given the measures of all angles in the first. Then,...
Worksheet
Curated OER

Circles - Word Problems

For Students 6th - 7th
In this geometry problem solving activity, students answer 8 words problems based on their knowledge of circles, circumference, radius, diameter, and perimeters. They show their work on the sheet between problems.
Lesson Plan
Curated OER

Up For Change?

For Teachers 7th - 9th
Students explore similar objects. They participate in a series of hands-on, multimedia and online activities to examine how the edge length affects the angle measures, perimeters and areas of similar regular polygons. Students find the...
Lesson Plan
Curated OER

Pythagoreum Theorem

For Teachers 6th - 8th
Students practice assessing how to apply the formulas for the area of parallelograms and triangles. They recount the contributions of Pythagoras and apply the theories of the Pythagorean theorem in a group project to calculate the...
Worksheet
Curated OER

A-Z Tech Math Final Exam Study Guide

For Students 9th - 10th
In this math study guide, learners solve problems previously studied throughout the school year. Problems include, but are not limited to, volume, area, perimeter, square roots, binomials, trinomials, graphing, and consumer math. This...
Lesson Plan
Curated OER

Rep Tiles

For Teachers 3rd
Third graders use pattern blocks of one shape at a time to try to create a similar shape. They compare the perimeter of the new figure with the perimeter of the original shape and look for a pattern. Students use the pattern to predict...
Lesson Plan
Curated OER

Congruent Trianges - Is This Enough Information?

For Teachers 7th
Seventh graders determine whether two triangles are congruent and provide an explanation to why they are not. They apply concepts of measurement of angles and collect evidence of congruent angles in the world.
Worksheet
Curated OER

Similarity

For Students 10th
In this similarity worksheet, 10th graders solve and complete 14 different types of problems. First, they find the length of each segment given two lines parallel. Then, students find the measure of each segment of a parallelogram...
Assessment
Noyce Foundation

Parallelogram

For Teachers 6th - 7th Standards
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...
Unit Plan
Mathematics Vision Project

Module 5: Modeling with Geometry

For Students 9th - 12th Standards
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...
Handout
Del Mar College

Formulas for Elementary and Intermediate Algebra

For Students 6th - 9th Standards
Give your scholars the support they need to work with formulas. A reference page offers definitions and picture examples of perimeter, area, surface area, volume, the Pythagorean theorem, a variety of shapes, and more. 
Assessment
Concord Consortium

Strings and Areas

For Students 9th - 11th Standards
You'd be surprised what you can do with a string! The constraint is the length of string, and the task is to maximize area. Given a series of composite shapes, learners must create a formula for the maximum area for a specified...
Assessment
Mathematics Assessment Project

Geometry

For Students 7th - 8th Standards
Help learners find joy in facing mathematical challenges. The questions posed on this worksheet encourage young mathematicians to utilize skills learned throughout a geometry unit, and to apply themselves and persevere through...
Worksheet
Curated OER

Area and Perimeter-Triangles [A]

For Students 5th - 6th
In this area and perimeter worksheet, learners find the area/perimeter for a set of 4 triangles. An answer key is included on page 2.
Worksheet
Geometry Accelerated

Accelerated Geometry Review Sheet

For Students 8th - 10th Standards
Your geometry learners use their knowledge of various geometric concepts to write proofs. Starting with givens containing parallel line segments with transversals and triangles and quadrilaterals, and the mid-point and distance formulas;...

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