Categories
Geometric Measurement and Dimension Pythagorean Theorem Right Triangles Similar Figures Similarity, Right Triangles and Trigonometry

A whole bunch of questions about right triangles

geom25 question

 

geom 25

 

geom 25 2 (800x648)

 

What other mistakes would you expect to see from this problem? How do you teach so as to help students avoid these pitfalls?

Thanks to Tina Cardone for the submission.

Categories
Geometric Measurement and Dimension Geometry High School: Geometry Pythagorean Theorem Quadrilaterals Similarity, Right Triangles and Trigonometry

Baseball Fields and Geometry

What made this question hard for the student? How come they got it wrong? Why did the student get it wrong in this particular way?

Today’s submission comes from Tina Cardone, who blogs at Drawing On Math.

Categories
Geometric Measurement and Dimension Geometry

Hexagons!

Define “Hexagon”:

What does this student know about hexagons? What does the student think he knows, but doesn’t? What does the mistake reveal about his thinking, and what would you do to help?