Starting with three linear equations, how can you tell which lines are parallel? The first equation is rewritten in slope-intercept form. The second equation represents a horizontal line, so it is already in slope-intercept form. The...

Can you tell, algebraically, if three lines are parallel? In this video, Sal demonstrates how to rewrite linear equations in slope-intercept form and compare the slope of each line.

Test-takers who have a hard time transitioning between math skills will find this video very helpful, as Sal moves quickly through increasingly complicated algebra and geometry problems. Not only are his math techniques top-notch, but...

Using The Official SAT Study Guide, Sal begins another review session of eighteen problems, six of which are addressed in this video. The problems involve variables in linear equations, angles and parallel lines, and ratios. One problem...

In this simultaneous equations activity, students solve and complete 7 various types of problems. First, they solve graphically the system of equations shown. Then, students find the number of solutions that each pairs of equations have....

Get jamming with lines and sing along to this karaoke that reviews the main types of lines. Your learners can't forget the main properties of lines when they sing the chorus on the karaoke song after the included slide show. The slides...

This one activity requires young geometers to pull together information they are currently learning with things they have learned previously. Here they rely on understanding something about parallel lines, alternative interior angles,...

So you have a transversal line intersecting two parallel lines and you are looking for a value that would make two corresponding angles congruent. You have all the information needed to write an equation to find the value. So write that...

Combine math and art by getting your class create a painting with parallel and perpendicular lines. Youngsters design a picture using multiple lines in a variety of thickness and color. They find parallel and perpendicular lines in real...

Who knew there were so many fun educational opportunities featuring pasta? Scholars read a brief informational text about the history of pasta (note that "macaroni" is spelled two different ways, so address this if kids are reading...

Explore algebra I/algebra II with this series of worksheets. Pupils write linear equations in slope-intercept and standard form, graph linear equations, and apply linear equations to real world applications. The six-page worksheet...

Geometers identify and determine angle pair relationships when two parallel lines are intersected by a transversal. They review the concepts of angles by watching streaming video clips online, read definitions of lines and angles from...

Upper graders and middle schoolers use a diagram to give examples vertical angles, alternate interior angles, and alternate exterior angles, find the degree measure of multiple angles, and draw and label a pair of complementary vertical...

Learners draw and label 8 geometric figures when given the labels. Definitions of basic geometric figures are given. Some of the questions deal with parallel lines, perpendicular lines, and the vertex of angles and rays.

Here is an identifying lines, line segments, rays, and angles instructional activity which has learners identify the figures by telling whether figures are right angles, less than a right angle, or greater than a right angle, identifying...

Fourth and fifth graders use words and symbols to name 4 figures. They label lines as parallel, intersecting, or perpendicular in the next three questions before drawing three examples of their own. They complete two test prep question...

Elementary schoolers examine a bowl of alphabet soup and follow the directions to group the letters. They group letters that contain perpendicular, parallel, and non-perpendicular intersecting lines. They determine which letters have...

In this geometry activity, upper graders use pattern blocks as a basis for identifying lines, angles, and shapes. Then they compare and contrast properties of various two-dimensional shapes. Pupils also create a block quilt from paper...

Learners analyze the examples of lines and angles. They label 16 pictures of lines or angles with the correct term.

Learners review the line segments and rays. In this identifying angles lesson, they define the word vertex and describe how angles are formed. Pupils show the parts of an angle and name them.

Learners draw and label 12 different geometric figures which include lines, line segments, angles, and ray. They answer six questions where they are given labeled geometric figures and write the name and symbol for each figure. Pupils...

Clever! Supposedly a strong wind blew the letters off of a classroom bulletin board, and now learners connect them according to directions listed. As a result, they end up drawing a line segment, ray, intersecting line, angles, and...

Upper graders answer four questions where they identify geometric figures as lines, line segments or rays. Next, they answer questions where they identify lines as parallel, intersecting, or perpendicular. Definitions and drawings of...

Is it a line, line segment, ray, or angle? Identifying geometric figures is the focus. In addition to identification, learners recognize right angles or tell if an angle is less than or greater than a right angle. They tell if lines are...