Lesson Plan
Curated OER

Business Letters: Writing a Letter of Complaint

For Teachers 10th - 12th
Students analyze the language features and layout of a letter and discuss the language used to describe the features. They write a letter of complaint, requesting that the problem be fixed, using the appropriate language and layout.
Lesson Plan
Curated OER

Global Warming and Climate Change

For Teachers K - 9th
Students explore the environment by writing a persuasive letter. In this global warming lesson plan, students identify the key problems with our energy consumption in the United States. Students complete worksheets and write a letter...
Activity
Illustrative Mathematics

Grass Seedlings

For Teachers 4th - 6th Standards
Plants never grow at the same rate, and that is the antithesis for this word problem involving multiplication of fractions. On the worksheet, Raul notices that Pablo's seedlings are 1 1/2 times as tall, and Celina's seedlings are 3/4 as...
Lesson Plan
Curated OER

Congruent Triangles Postulates

For Teachers 3rd - 4th
Young scholars discover three lettered postulates that prove triangles congruent.
Lesson Plan
Curated OER

Name Clothesline Graph

For Teachers K
Student matches the initial letter of his/her name with the corresponding letter on the clothesline. They then participate in the classroom discussions by offering information relevant to the topic and answering or asking questions...
Assessment
Concord Consortium

Area Upgrade

For Students 10th - 12th Standards
Imagine a world built of triangles. A performance task asks scholars to consider just that. They use their knowledge of special segments of a triangle to make decisions about the area of triangular plots of land.
Lesson Plan
Curated OER

Fly, Fly Away

For Teachers 9th - 12th
Young scholars use materials from their own environment to design a kite. In this kite design lesson, students research the history of kites and obtain a formal mathematical definition of a kite. Young scholars sketch kite designs after...
Assessment
Illustrative Mathematics

Find the Missing Number

For Students 1st Standards
First graders are asked to find the missing numbers in subtraction and addition equations. Each missing number is represented with a box and appears as an addend, subtrahend, sum, or difference.
Lesson Plan
Curated OER

Lesson #2 Absolute Value and Symmetry

For Teachers 11th - 12th
Students investigate absolute value functions.  In this Algebra II/Pre-calculus/Calculus lesson, students explore the formal definition of absolute value and apply the piece-wise definition to solve inequality problems. ...
Lesson Plan
Curated OER

Global Warming Statistics

For Teachers 7th - 12th
Students research real-time and historic temperature data of U.S. and world locations, and analyze the data using mean, median, and mode averages. They graph the data and draw conclusions by analyzing the data. A spreadsheet is used to...
Lesson Plan
Curated OER

New York City Delights: The Taxi Cab

For Teachers 6th - 8th
You set the rate! Step into the shoes of a taxi driver in New York City, and also pretend to be a person who uses taxis to get around town. The class will conduct collaborative research to learn about the history of taxis. Then, they...
Lesson Plan
Curated OER

Hardware Sort

For Teachers 9th - 12th
High schoolers work in groups to sort and classify a variety of hardware materials commonly found in the store. Students discuss attributes and explain their reasoning for different classifications.
Lesson Plan
Curated OER

Design Explorations: Frieze Patterns

For Teachers 6th - 8th
Students will explore frieze patterns. A frieze pattern is a mathematical concept to classify designs on two-dimensional surfaces, which are repetitive in one direction, based on the symmetries in the pattern. They will explore examples...
Worksheet
Curated OER

Reviewing Functions

For Students Higher Ed
In this function worksheet, students describe a function and write six different ways a function may be modeled. This two-page worksheet contains eight problems.
Lesson Plan
Curated OER

Basic Crypto Systems II

For Teachers 9th
Ninth graders discuss the Enigma machine used during World War II. They explore the substitution cipher and variations of it. Students examine the advantages and disadvantages of this cipher. Students write a message using the code...

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