8th Grade Math (Pre-Algebra) Using Similar Triangles in a PowerPoint Presentation
This slideshow lesson is very animated with a flow-through technique. I developed the lesson for my 8th grade class, but it can also be used for upper level class reviews. This lesson teaches how to understand the concept of similar triangles, identify similar triangles, use indirect measurement to find missing measures and solve a real-life problem using proportions to find the distance across a river.
The lesson is in an editable format
so you can tailor the lesson to your class. The problems and clipart can’t be edited
due to the TOU and to maintain the copyright integrity of the product. You can change the problem number and the names. Using student’s or teacher’s names can be another hook. If you need an alternative version because your country uses different measurements, units, or slight wording adjustment for language differences just email me at PrestonPowerPoints@gmail.com. I am respond to email quickly.
The presentation has 44 slides with LOTS of whiteboard practice. Use as many or as few of the problems to help your students learn each concept. For more PowerPoint lessons & materials visit Preston PowerPoints
Students often get lost in multi-step math problems. This PowerPoint lesson is unique because it uses a flow-through technique, guided animation, that helps to eliminate confusion and guides the student through the problem. The lesson highlights each step of the problem as the teacher is discussing it, and then animates it to the next step within the lesson. Every step of every problem is shown, even the minor or seemingly insignificant steps. A helpful color-coding technique engages the students and guides them through the problem (Green is for the answer, red for wrong or canceled numbers, & blue, purple & sometimes orange for focusing the next step or separating things.) Twice as many examples are provided, compared to a standard textbook. All lessons have a real-world example to aid the students in visualizing a practical application of the concept.
This lesson applies to the Common Core Standard:
Understand congruence and similarity using physical models, transparencies, or geometry software.
5. Use informal arguments to establish facts about the angle sum and exterior angle of triangles, about the angles created when parallel lines are cut by a transversal, and the angle-angle criterion for similarity of triangles. For example, arrange three copies of the same triangle so that the sum of the three angles appears to form a line, and give an argument in terms of transversals why this is so.
Are you looking for the 8th Grade Angles and Triangles Bundle? Click here!
This resource is for one teacher only.
You may not upload this resource to the internet in any form. Additional teachers must
purchase their own license. If you are a coach, principal or district interested in purchasing several licenses, please contact me for a district-wide quote at firstname.lastname@example.org. This product may not be uploaded to the internet in any form, including classroom/personal websites or network drives.
*This lesson contains 21 problems. Each problem in this lesson uses several pages in order to achieve the animated flow-through technique.