Geometry
Grouping Quadrilaterals In A Hierarchy
Can we classify quadrilaterals like we classify living things?
Discovering Pi With Sticky Notes
Pi is mysterious and strange! Why not let students discover it on their own?
Angles of a Triangle
Why tell a kid the rules of a triangle when they can discover them!?
Deducing the Area of Triangles
Using patterns, students try to deduce where that area formula came from.
Lines, Line Segments, Rays, and Infinity!
A lesson about lines, line segments, and rays that avoids dull memorization. Instead, we ponder this delightful question: Which is longer, a ray or a line? Then, kids consider what these different geometric concepts would think about each other.
Regular or Irregular Polygons – Concept Attainment
Can your students puzzle out the differences in these shapes - without any instruction!?
Letters With Symmetry
Let's group letters by their symmetry, then create symmetrical words, and then symmetrical sentences!
Geometry Image: Esplanade Theaters
What odd and interesting shapes can your students find in this geometric image?
Geometry Image: Victoria Conference Center
What odd and interesting shapes can your students find in this geometric image?
Geometry Image: University Ave
What odd and interesting shapes can your students find in this geometric image?
Geometry Image: Skytree
What odd and interesting shapes can your students find in this geometric image?
Geometry Image: Steigerwald
What odd and interesting shapes can your students find in this geometric image?
Grouping Shapes by Parallel and Perpendicular Sides
Which shapes go together based on parallel and perpendicular lines?