The purpose of this Instructable is to help students distinguish between Acute, Obtuse, Right & Straight Angles by playing a variation of Rock, Paper & Scissors. Your students will love it!
Add a Teacher Note to share how you incorporated it into your lesson.
Step 1: Mathematical Note About Rock, Paper & Scissors
Note: Most rock, paper, scissor games are played with an odd number of choices in order to optimize game play. This insures that each move (rock, paper or scissors) has the same probability of winning. I choose to use four choices obtuse, acute, right and straight because they are the most common classification of angles that students must learn. Using an even number of choices creates some uneven outcomes and alters the strategy of game play, but this can be overlooked since the ultimate goal is for students to learn the concepts as opposed to being the winner
Step 2: How the Game Works
The game-play is similar to Rock, Paper & Scissors except the hand gestures have changed. We will detail the hand gestures in the upcoming steps but this step details how rock, paper & scissors is played.
****Note: If you are familiar with how to play rock, paper & scissors, feel free to skip this step**
How to play Rock Paper & Scissors?
Taken from e-how
Step 3: Obtuse Angle Hand Gesture
Here is the hand gesture for Obtuse angles
Obtuse x > 90 degrees
Step 4: Acute Angle Hand Gesture
Here is the hand gesture for Abtuse angles
Acute Angle x < 90 degrees
Step 5: Straight Angle Hand Gesture
Here is the hand gesture for Straight angles
Straight Angle (line) 180 degrees
Step 6: Right Angle Hand Gesture
Here is the hand gesture for Right angles
Right Angle 90 degrees
Step 7: Rules of Actual Game Play
As stated in a previous step, since the choices of inputs are even (not odd), the distribution of outcomes will be not be evenly distributed. This can be overlooked since the ultimate goal is for students to learn to distinguish concepts as opposed to being the winner of the game.
The distribution of outcomes are as follows
1) Obtuse Angles beat Acute Angles
2) Acute Angles beat Right and Straight Angles
3) Right Angles beat Obtuse Angles
4) Straight Angles beat Obtuse and Right Angles.
Here are pictures for my reasoning. Yes, my mind works like a child!
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