Concord Consortium
Always, Sometimes, Never
Do your learners always, sometimes, or never remember the properties of the segments in triangles? Get that number closer to always with a creative lesson analyzing all four segments. Scholars consider a statement about one of the...
Curated OER
A Shapely Activity
Fifth graders explore polygons in various shape activities. In this polygons lesson, 5th graders discuss and identify polygons by their number of sides. Students sort ceramic tiles by the number of sides on each piece. Students explore...
Curated OER
Equations 1
Students discuss the meaning of balance and how it applies to equations. After listening to a lecture, they practice solving equations with two orders of operation and doing whatever they do on one side to the other side as a class. To...
Curated OER
Exploring the Hinge Theorem
Pupils explore the application of Hinge Theorem. In this geometry lesson, students write inequalities, given two sides of a triangle. They solve problems with triangular inequalities using the proper theorem.
Curated OER
Naming Polygons
What polygon is this? Young geometers categorize shapes by circling all the quadrilaterals in a set of figures. Next, they write the names of 10 polygons using a visual guide as reference. Review the guide together before they start if...
EngageNY
Solving Problems Using Sine and Cosine
Concepts are only valuable if they are applicable. An informative resource uses concepts developed in lessons 26 and 27 in a 36-part series. Scholars write equations and solve for missing side lengths for given right triangles. When...
Tennessee State Museum
Understanding Women’s Suffrage: Tennessee’s Perfect 36
Tennessee was the pivotal state in ratifying women's suffrage in 1920, with its vote coming down to one man: Harry Burn, a 24-year old state representative who changed his nay to an aye on the advice of his mother. Learn more about...
Curated OER
Formula Determination
Learners derive a formula for the interior degrees in any convex polygon. In this geometric figure lesson, students determine the shapes of various polygons and the number of triangles formed. They use this information to derive the...
Curated OER
The Government: From Different Perspectives
Fifth graders investigate the importance of government by conducting a debate. In this U.S. Government lesson, 5th graders utilize their classroom as the setting for a two sided debate based on whether government is essential to a...
Curated OER
Area of a Triangle
Students solve the area of triangles. For this precalculus lesson, students are given two sides of a triangle and asked to calculate the area. They apply the law of sine and the side-angle-side area formula to solve.
Curated OER
When Does SSA Work to Determine Triangle Congruence?
Your learners will make good use of the Socratic method in a collaborative task that begins with an assumed solution and ends with deeper understanding of the idea of determining two triangles congruent.
Curated OER
Things That Fly
Students examine animals that can fly and discover that those animals need wind and wings to be able to leave the ground. They create a chart with two sides and they divide animals and objects that fly.
Curated OER
Collage/Symbol/Message Concertina Book
Students use a collage method to create a concertina book that presents one theme on one side and another theme on the other side.
Curated OER
Math Lesson: Rotational Symmetry
Students analyze lines of symmetry and rotational symmetry in designs. They practice dividing a shape along its line(s) of symmetry and discuss the relationship between lines of symmetry and number of sides as well as rotations.
Curated OER
Gougu Rule or Pythagoras' Theorem
Fifth graders explore Pythagoras' Theorem. They examine the pattern linking the length of the hypotenuse of a right angled triangle and the length of the other two sides. Students find an unknown side in right angled triangles.
Curated OER
The Unseen Ocean Floor
Students build ocean floor structures, then map and model an unfamiliar ocean floor. They are introduced to bathymetry and sea floor features, and discover one of the most widely usd methods for studying the ocean.
Curated OER
Propaganda
How does word choice affect the reading of a text? Compare two headlines that were written about the same event. Is one biased? Discuss how word choice often reveals the author's feelings about a topic. Then look at different techniques...
Illustrative Mathematics
Solving Equations
If you have two bags with an unknown number of tiles, represented by x, and you add three tiles to get seven total, you can set up a linear equation to represent the problem. Use this example and a few others to demonstrate how to solve...
Illustrative Mathematics
Longer and Heavier? Shorter and Heavier?
For many young children it seems obvious that longer objects are heavier than shorter objects. This assumption is put to the test as the class investigates the relationship between length and weight in a whole-group activity. Using a...
You Evanston
Social Emotional Activities Workbook
Split into five sections, you'll find plenty of activities, discussion prompts, and worksheets to address social-emotional intelligence. Learners focus on self-awareness, self-management, social awareness, relationship skills, and...
NASA
Pop! Rockets
Off they go — launching rockets is fun. The lesson plan contains templates to build paper rockets that can be launched from a PVC pipe launcher. Individuals or groups build the rockets and determine the shapes for their fins. Included...
Charleston School District
Solving with Inverse Operations
What does order of operations have to do with solving equations? A video explains solving two-step equations using a do/undo chart. Learners recognize the operations within an equation and use inverse operations to undo those operations.
West Contra Costa Unified School District
Pythagorean Theorem and Its Converse
Challenge scholars to prove the Pythagorean Theorem geometrically by using a cut-and-paste activity. They then must solve for the missing sides of right triangles.
Shodor Education Foundation
Pythagorean Explorer
Make sure the measurement is right. The interactive provides right triangles with a missing side measurement. Pupils use the given sides and the Pythagorean Theorem to calculate the length of the missing side. After entering the length,...