Curated OER
Math-Measurement
First graders examine measurement. In this measurement lesson plan, 1st graders practice using nonstandard units to help in measuring objects. Students listen to How Big is a Foot and complete an activity using unifix cubes to measure...
Curated OER
Arc Length and Sectors
Find the length of an arc. Students relate central angles to the area and length of a sector and graph circles on the TI to make predictions.
Curated OER
Radian Measure
Young mathematicians identify central angles, arcs and radius of circles in this pre-calculus lesson plan. They identify the proportion of the circle based on its radius while they convert between degrees and radians measurements.
Alabama Learning Exchange
Radians: Just Another Way
Serve up angle measurements on paper plates. Pupils use paper plates and paper-folding techniques to create a unit circle with conversions for special angles. Using their plates, learners explore the relationship between angle...
National Security Agency
Backyard Building - Area and Perimeter
Turn young mathematicians into landscape architects with this four-lesson series on area and perimeter. Beginning with a basic introduction to calculating perimeter and area using non-standard units of measurement, this instructional...
Illustrative Mathematics
Paper Clip
With minimal setup and maximum freedom, young geometers are encouraged to think outside the box on a seemingly simple application problem. Though the task seems simple, measuring a given paper clip and finding how many 10 meters can...
Illustrative Mathematics
Two Wheels and a Belt
Geometry gets an engineering treatment in an exercise involving a belt wrapped around two wheels of different dimensions. Along with the wheels, this belt problem connects concepts of right triangles, tangent lines, arc length, and...
Balanced Assessment
Curvy-Ness
Curves ahead! Develop a numerical measurement of curvy-ness. The class is challenged to come up with a definition of curvy that can be applied to curves. The class members use their defined measurement to describe a curve.
Illustrative Mathematics
Running Around a Track I
The accuracy required by the design and measurement of an Olympic running track will surprise track stars and couch potatoes alike. Given a short introduction, the class then scaffolds into a detailed analysis of the exact nature of the...
Curated OER
Length, Perimeter, and Area
Young scholars explore the concepts of length, perimeter and area. Students develop an understanding of length, perimeter, and area. Young scholars calculate the area and perimeter of random shapes and calculate the area and perimeter of...
Curated OER
Arc Length - Horse
High schoolers define an arc and calculate its length. In this geometry lesson, students find examples of arc in the real world. They show their understanding of arcs through problem solving.
Curated OER
Arc Length and Radian Measure
In this arc length learning exercise, students convert radians to degrees and degrees to radian measure. Ten problems are provided on this one-page learning exercise.
Curated OER
Solve for the Arc Length Problems
In this arc length worksheet, students solve for the arc length for four angles. Three of the angles are given in degrees while the other angle length is given in radians. The solutions are not provided.
Curated OER
Inching Our Way through Measurement
Students review how to use an inch ruler and listen to the story, Inch by Inch by Leo Lionni. In this measuring instructional activity, students work in small groups to create an Inch Poster. Students then use an inch ruler to measure...
Curated OER
Comparing Measurements
Students explore measurements by completing worksheets in class. In this geometry lesson, students identify the basic measurement units in both the English and metric systems. Students analyze 2 and 3 dimensional objects and identify...
Curated OER
Radians, Arc Length, and the Area of a Sector
In this college level geometry worksheet, students convert between degrees and radians. Students determine arc length and solve problems involving the area of a sector. The four page worksheet contains seventy-four problems. Answers...
Curated OER
Ten Multiple Choice Length Problems
In this distance learning exercise, learners calculate the lengths of sides and diagonals of figures. Students also compute lengths in shadow problems. The solutions are provided by clicking on the "show answers" tab at the bottom of...
Curated OER
Lengths, Areas and Shapes - Week 9
In this lengths, areas and shapes worksheet, learners explore overlapping and non-overlapping patterns. They identify the number of objects in a pattern, determine how the pattern may be folded to create additional patterns, and...
Curated OER
Find the Area or Missing Length of the Polygon
In this area and perimeter worksheet, students find the length or area of seventeen figures. The figures examined are triangles, trapezoids, parallelograms, rectangles, and hexagons. Some examples and solutions are provided.
Curated OER
Peg a Path- Visual Thinking and Length Worksheet
In this visual thinking and length worksheet, 1st graders examine a pegboard path. They draw two different paths that are equal in length to 4 examples.
Curated OER
Measuring Inches
First graders measure the length of pipe cleaners to form worms using rulers to focus on inches. They record their results and graph the measurement of each pipe cleaner. They measure their pipe cleaner "worms" in various colors and...
Curated OER
Perimeter of Shapes
These squares and rectangles have length and width measurements with decimals; can young geometers determine the exact perimeter of each? Using a step-by-step example as guidance, they show work to find the perimeter of each of these...
Curated OER
Cylinders and Scale
Students review what a cylinder is and how a cylinder is measured. They build a variety of cylinders with different heights and radii. They compare the surface area and volume of each cylinder and discuss anything that surprises them...
Curated OER
Using Tiling to Find Area
By splitting rectangles into four equal parts, scholars practice calculating area and determining side length. They begin by determining the area of each rectangle before segmenting it. Then, they use the space provided to split it into...
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