We look at four different word problems and write an equation for each. The first one involves the perimeter of a parallelogram. The second, area of a two-part rectangle. The third one has to do with the ages of two people - we know one is four times as old as the other, and 40 years older than the other. In the last problem, we're given the aspect ratio and the perimeter of a rectangle, and the task is to find the side lengths.
For each problem, write a fairly simple linear equation and then solve the equation. I also solve some problems without the equation first - so you can see how the mental math or bar diagram solution steps match with the steps of solving the equation.
This lesson is meant for pre-algebra or for beginning algebra students.
See also my other pre-algebra videos at http://www.mathmammoth.com/videos/prealgebra/pre-algebra-videos.php
Tagged under: pre-algebra,algebra,grade 7,math,equation,write equation,word problem,perimeter,area,age problem
Clip makes it super easy to turn any public video into a formative assessment activity in your classroom.
Add multiple choice quizzes, questions and browse hundreds of approved, video lesson ideas for Clip
Make YouTube one of your teaching aids - Works perfectly with lesson micro-teaching plans
1. Students enter a simple code
2. You play the video
3. The students comment
4. You review and reflect
* Whiteboard required for teacher-paced activities
With four apps, each designed around existing classroom activities, Spiral gives you the power to do formative assessment with anything you teach.
Carry out a quickfire formative assessment to see what the whole class is thinking
Create interactive presentations to spark creativity in class
Student teams can create and share collaborative presentations from linked devices
Turn any public video into a live chat with questions and quizzes