Protractor Angle Demo

Author:rcsellers

Just a quick demonstration of why there are two scales on a protractor. Many students don't seem to have a good conceptual grounding in how they should reason through which scale to use.

New Resources

以百分數比較兩個數值
Constructing the Midpoint and the Perpendicular Bisector of a Segment
探究長方形對角線上的正方形數目
Example of using color palette
גיליון אלקטרוני להעלאת נתוני בעיה ויצירת גרף בהתאם

Discover Resources

Attempt 2
perpendicular 2
สามเหลี่ยมพีทาโกรัส
Area approximations
Pythagorean Theorem Exploration

Discover Topics

Difference and Slope
Rational Numbers
Subtraction
Random Variables
Centroid or Barycenter