Curated OER
Creating Parallel Lines and Transversals
Have your class create parallel lines. Students will learn how to identify the different angles created by a parallel line cut by a transversal. Then, they identify and name similar and different angles.
Curated OER
Investigating the Slopes of Parallel and Perpendicular Lines
High schoolers investigate parallel and perpendicular lines. They use Cabri Jr. to construct and explore the relationships between the slopes of parallel and perpendicular lines. The drawing and measurement tools available with Cabri Jr....
Curated OER
Horizontal and Vertical Lines
Students solve equations and graph-their solutions. In this algebra lesson, students, identify the type of line using the slope of the equation. They graph and observe their lines.
Curated OER
Simple Inequalities on a Number Line
Students solve inequalities problems. In this algebra lesson, students graph the solution of inequalities on a number line. They discuss boundaries and open or closed intervals.
Curated OER
Using Opening Lines as Writing Prompts
Help your writers get started with these hooks! Twenty-five opening lines from the "Lives" column in the New York Times Magazine act as prompts for creative writing. Have your learners choose one prompt and write an original essay....
Curated OER
The Human Line Plot
Fifth graders collect data and use charts and line plots to graph data. Through class surveys, 5th graders collect data concerning a particular subject. They graph their data using a line graph. Students make inferences and predictions...
Curated OER
Intersecting Lines and Segments of Measures
Mathematicians measure intersecting lines-and circles, and create chords. In this geometry instructional activity, students explore interrior and exterior chords created by tangent and secant lines. These segments can be inside the...
Curated OER
Reflections
Learners explore reflection of polygons on a coordinate plane. They examine the relationships that exist between corresponding points and sides.
Curated OER
From Printed Page to Home Page
Students compare on-line newspapers to their print counterparts
Curated OER
Plot Your Course
Students determine distance and direction on a nautical chart. In this nautical lesson, students identify obstacles and characteristics of common aid to navigation on a nautical chart.
Curated OER
Navigation Across the Seas
Students examine nautical navigation and discover the differences between nautical charts and other types of maps or charts. Students practice setting a course, taking a bearing, and dead reckoning. This gives students an example of...
Curated OER
Read On
Students consider the question "Why do we read?" through creating and sharing individual timelines of their own histories as readers. They then choose a book on which to write a personal essay.
Curated OER
Influence and Outliers
Using the TI-Nspire calculator, statisicians identify outliers and their effect on the least-squares regression line. In finding the line of best fit, they determine what points will affect the least squares regressions and what points...
TED-Ed
A Digital Reimagining of Gettysburg
Why would Robert E. Lee order Pickett's Charge, an action that changed the course of the Civil War? Geographer and historian Anne Knowles uses digital technology to explain what she thinks is the missing piece in trying to understand...
Planet e-Book
Oliver Twist
"Please, sir. May I have some more?" An eBook version of Oliver Twist by Charles Dickens introduces readers to the text that inspired the classic line. An oldie but a goodie, book worms see why this novel is so beloved.
Curated OER
Pyramid Activity
Pupils explore the concept of pyramids. They determine if two sides of a pyramid are perpendicular using a graphing calculator, then discuss parallel and perpendicular lines and how to determine if two lines are parallel or...
Curated OER
Perpendicular Bisector Theorem
High schoolers construct perpendicular bisectors using Cabri Jr. on their graphing calculator. They then construct conditional statements about perpendicular bisectors along with their converse, inverse, and contrapositive.
Texas Instruments
Exploring Tangents
Explore the concept of tangent lines. In this tangent line lesson, learners graph a circle and two lines on their graphing calculator using Cabri Jr. Students construct the lines so that they both intersect at a given point and are both...
Curated OER
Investigating Correlation
High schoolers investigate different types of correlation in this statistics lesson. They identify positive, negative and no correlation as it relates to their data. They then find the line of best fit for the plotted data.
Curated OER
Implicit Differentiation
Pupils explore the concept of derivatives. They use implicit differentiation to determine points on a graph where a tangent line is horizontal, vertical, or oblique. Finally, learners find the derivative of a polynomial by...
NOAA
Ocean Exploration
Where am I? The second installment of a 23-part NOAA Enrichment in Marine sciences and Oceanography (NEMO) program starts with pupils guessing the years in which major ocean exploration events took place. The instructional activity then...
Curated OER
Mapping Worksheet #1
Get out the compass and a pencil its time to use a coordinate grid to practice mapping skills. Young cartographers use the prompts and provided grid to plot locations, draw parallel lines, and determine distances between points.
Agile Mind
Cake Weighing
An online set of four yummy questions addresses number sense for sixth graders. They place points on a number line, determine relative values, interpret absolute value, and apply their understanding to the weighing of cakes for a bakery....
The New York Times
Where to Draw the Line: Balancing Government Surveillance with the Fourth Amendment
The question of how to balance Fourth Amendment Rights with national security concerns becomes critical in an age of planned terrorist attacks, election interference, and fake news. Get young social scientists involved in the debate with...