Grades 5-6 Video Solutions 2022-2022_5-6

Video Transcription

Problem number 3. Laser beams reflect in mirrors in the way shown in the first picture. At which letter will the laser beam in the second picture end?  Alright, so the first step for this problem is to just draw the path based on the instructions.  So in the instructions that we see that the laser reflects off of this mirror at a right angle, and goes kind of perpendicular to what the mirror shows.  So, if we look at this, if we look at the second picture, you can see that from here, the laser would first go up, and then right, and then down, and then left, and etc, etc.  And then, we can draw this picture out, and it'll look as follows. So, the laser would follow this path over here, down, left, down, right, up, right, up,  and then all the way down until you finally reach B. And of course, if the answer is point B, then the letter is also B, and that solves this problem.

Video Summary

Problem number 3. Laser beams reflect in mirrors in the way shown in the first picture. At which letter will the laser beam in the second picture end? Alright, so the first step for this problem is to just draw the path based on the instructions. So in the instructions that we see that the laser reflects off of this mirror at a right angle, and goes kind of perpendicular to what the mirror shows. So, if we look at this, if we look at the second picture, you can see that from here, the laser would first go up, and then right, and then down, and then left, and etc, etc. And then, we can draw this picture out, and it'll look as follows. So, the laser would follow this path over here, down, left, down, right, up, right, up, and then all the way down until you finally reach B. And of course, if the answer is point B, then the letter is also B, and that solves this problem.

Keywords

laser beams

reflection

mirrors

path drawing

problem solving