Virginia Department of Education
Lines and Angles
Explore angle relationships associated with transversals. Pupils construct parallel lines with a transversal and find the measures of the angles formed. They figure out how the different angles are related before constructing...
EngageNY
First Consequences of FTS
Challenge the young mathematicians to find the exact coordinates of a dilated point. The fifth segment in a 16-part series introduces the class to the converse of the Fundamental Theorem of Similarity. Scholars use the theorem to...
Mathematics Vision Project
Module 3: Geometric Figures
It's just not enough to know that something is true. Part of a MVP Geometry unit teaches young mathematicians how to write flow proofs and two-column proofs for conjectures involving lines, angles, and triangles.
02 x 02 Worksheets
Slope
What does slope have to do with lines? Pupils work with lines and determine the slope of the lines informally and with the slope formula. Groups use their knowledge to calculate the slopes of parallel and perpendicular lines. They also...
EngageNY
Informal Proofs of Properties of Dilations
Challenge the class to prove that the dilation properties always hold. The lesson develops an informal proof of the properties of dilations through a discussion. Two of the proofs are verified with each class member performing the...
DiscoverE
LIDAR: Mapping with Lasers
We would be lost without maps! How are they made? Introduce junior topographers to LIDAR technology with a fascinating activity. Set up a mock city, then have learners operate a laser measure to determine the shape of the landscape using...
EngageNY
Informal Proof of AA Criterion for Similarity
What does it take to show two triangles are similar? The 11th segment in a series of 16 introduces the AA Criterion for Similarity. A discussion provides an informal proof of the theorem. Exercises and problems require scholars to apply...
National Endowment for the Humanities
Animal Farm: Allegory and the Art of Persuasion
Introduce your class members to allegory and propaganda with a series of activities designed to accompany a study of George Orwell's Animal Farm. Readers examine the text as an allegory, consider the parallels to collective farms...
DiscoverE
Marble Run
It's time to slow your roll! Can your class create a track that allows a marble to roll as slowly as possible? Teams of science scholars collaborate to design, build, and test their tubes while learning about gravity and friction.
EngageNY
Complex Numbers and Transformations
Your learners combine their knowledge of real and imaginary numbers and matrices in an activity containing thirty lessons, two assessments (mid-module and end module), and their corresponding rubrics. Centered on complex numbers and...
New York City Department of Education
What Did I Do to Be so Black and Blue: How Did Jazz Influence Ralph Ellison's Invisible Man
How did jazz influence Ralph Ellison's Invisible Man? Class members read some of Ellison's non-fiction writings about blues and jazz, listen to records, watch videos, and engage in student-centered discussions. They then produce podcasts...
Novelinks
Zach’s Lie: Questioning Strategy – Cubing
Your class won't be a bunch of squares from using this well-rounded activity! Instead, they'll be expressing thoughtful questions using the cubing strategy. The class brainstorms questions of increasing rigor about Zach's Lie in the...
Curated OER
The Seven Continents Scavenger Hunt
Who doesn't enjoy an engaging scavenger hunt? Here, scholars listen to, and discuss, the informative text, Where is my Continent? by Robin Nelson. They then explore the seven continents and four major oceans using...